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source: palm/trunk/SOURCE/wind_turbine_model_mod.f90 @ 4458

Last change on this file since 4458 was 4457, checked in by raasch, 4 years ago
ghost point exchange modularized, bugfix for wrong 2d-exchange
Property svn:keywords set to `Id`
File size: 146.1 KB

Rev	Line
[1820]	1	!> @file wind_turbine_model_mod.f90
[1912]	2	!------------------------------------------------------------------------------!
[2696]	3	! This file is part of the PALM model system.
[1819]	4	!
[2000]	5	! PALM is free software: you can redistribute it and/or modify it under the
	6	! terms of the GNU General Public License as published by the Free Software
	7	! Foundation, either version 3 of the License, or (at your option) any later
	8	! version.
[1819]	9	!
[4411]	10	! PALM is distributed in the hope that it will be useful, but WITHOUT ANYr
[1819]	11	! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
	12	! A PARTICULAR PURPOSE. See the GNU General Public License for more details.
	13	!
	14	! You should have received a copy of the GNU General Public License along with
	15	! PALM. If not, see <http://www.gnu.org/licenses/>.
	16	!
[3885]	17	! Copyright 2009-2019 Carl von Ossietzky Universitaet Oldenburg
[4360]	18	! Copyright 1997-2020 Leibniz Universitaet Hannover
[1912]	19	!------------------------------------------------------------------------------!
[1819]	20	!
	21	! Current revisions:
	22	! -----------------
[1913]	23	!
[4438]	24	!
[1913]	25	! Former revisions:
	26	! -----------------
	27	! $Id: wind_turbine_model_mod.f90 4457 2020-03-11 14:20:43Z raasch $
[4457]	28	! use statement for exchange horiz added
	29	!
	30	! 4447 2020-03-06 11:05:30Z oliver.maas
[4447]	31	! renamed wind_turbine_parameters namelist variables
	32	!
	33	! 4438 2020-03-03 20:49:28Z suehring
[4438]	34	! Bugfix: shifted netcdf preprocessor directive to correct position
	35	!
	36	! 4436 2020-03-03 12:47:02Z oliver.maas
[4434]	37	! added optional netcdf data input for wtm array input parameters
	38	!
	39	! 4426 2020-02-27 10:02:19Z oliver.maas
[4426]	40	! define time as unlimited dimension so that no maximum number
	41	! of time steps has to be given for wtm_data_output
	42	!
	43	! 4423 2020-02-25 07:17:11Z maronga
[4423]	44	! Switched to serial output as data is aggerated before anyway.
	45	!
	46	! 4420 2020-02-24 14:13:56Z maronga
[4420]	47	! Added output control for wind turbine model
	48	!
	49	! 4412 2020-02-19 14:53:13Z maronga
[4412]	50	! Bugfix: corrected character length in dimension_names
	51	!
	52	! 4411 2020-02-18 14:28:02Z maronga
[4411]	53	! Added output in NetCDF format using DOM (only netcdf4-parallel is supported).
	54	! Old ASCII output is still available at the moment.
	55	!
	56	! 4360 2020-01-07 11:25:50Z suehring
[4346]	57	! Introduction of wall_flags_total_0, which currently sets bits based on static
	58	! topography information used in wall_flags_static_0
	59	!
	60	! 4343 2019-12-17 12:26:12Z oliver.maas
[4343]	61	! replaced <= by < in line 1464 to ensure that ialpha will not be
	62	! greater than dlen
	63	!
	64	! 4329 2019-12-10 15:46:36Z motisi
[4329]	65	! Renamed wall_flags_0 to wall_flags_static_0
	66	!
	67	! 4326 2019-12-06 14:16:14Z oliver.maas
[4326]	68	! changed format of turbine control output to allow for higher
	69	! torque and power values
	70	!
	71	! 4182 2019-08-22 15:20:23Z scharf
[4182]	72	! Corrected "Former revisions" section
	73	!
	74	! 4144 2019-08-06 09:11:47Z raasch
[4144]	75	! relational operators .EQ., .NE., etc. replaced by ==, /=, etc.
	76	!
	77	! 4056 2019-06-27 13:53:16Z Giersch
[4056]	78	! CASE DEFAULT action in wtm_actions needs to be CONTINUE. Otherwise an abort
	79	! will happen for location values that are not implemented as CASE statements
	80	! but are already realized in the code (e.g. pt-tendency)
	81	!
	82	! 3885 2019-04-11 11:29:34Z kanani
[3885]	83	! Changes related to global restructuring of location messages and introduction
	84	! of additional debug messages
	85	!
	86	! 3875 2019-04-08 17:35:12Z knoop
[3875]	87	! Addaped wtm_tendency to fit the module actions interface
	88	!
	89	! 3832 2019-03-28 13:16:58Z raasch
[3832]	90	! instrumented with openmp directives
	91	!
	92	! 3725 2019-02-07 10:11:02Z raasch
[3725]	93	! unused variables removed
	94	!
	95	! 3685 2019-01-21 01:02:11Z knoop
[3685]	96	! Some interface calls moved to module_interface + cleanup
	97	!
	98	! 3655 2019-01-07 16:51:22Z knoop
[3593]	99	! Replace degree symbol by 'degrees'
[4182]	100	!
	101	! 1914 2016-05-26 14:44:07Z witha
	102	! Initial revision
	103	!
[3593]	104	!
[1819]	105	! Description:
	106	! ------------
	107	!> This module calculates the effect of wind turbines on the flow fields. The
	108	!> initial version contains only the advanced actuator disk with rotation method
	109	!> (ADM-R).
	110	!> The wind turbines include the tower effect, can be yawed and tilted.
	111	!> The wind turbine model includes controllers for rotational speed, pitch and
	112	!> yaw.
	113	!> Currently some specifications of the NREL 5 MW reference turbine
	114	!> are hardcoded whereas most input data comes from separate files (currently
	115	!> external, planned to be included as namelist which will be read in
	116	!> automatically).
	117	!>
[3065]	118	!> @todo Replace dz(1) appropriatly to account for grid stretching
[1819]	119	!> @todo Revise code according to PALM Coding Standard
	120	!> @todo Implement ADM and ALM turbine models
	121	!> @todo Generate header information
[1917]	122	!> @todo Implement further parameter checks and error messages
[1819]	123	!> @todo Revise and add code documentation
	124	!> @todo Output turbine parameters as timeseries
	125	!> @todo Include additional output variables
[1864]	126	!> @todo Revise smearing the forces for turbines in yaw
	127	!> @todo Revise nacelle and tower parameterization
	128	!> @todo Allow different turbine types in one simulation
[1819]	129	!
	130	!------------------------------------------------------------------------------!
	131	MODULE wind_turbine_model_mod
	132
	133	USE arrays_3d, &
[2553]	134	ONLY: tend, u, v, w, zu, zw
[1819]	135
[3274]	136	USE basic_constants_and_equations_mod, &
[2553]	137	ONLY: pi
[1819]	138
	139	USE control_parameters, &
[3885]	140	ONLY: coupling_char, &
	141	debug_output, &
[4411]	142	dt_3d, dz, end_time, message_string, time_since_reference_point,&
	143	wind_turbine, initializing_actions, origin_date_time
[1819]	144
	145	USE cpulog, &
	146	ONLY: cpu_log, log_point_s
	147
[4411]	148	USE data_output_module
	149
[1819]	150	USE grid_variables, &
	151	ONLY: ddx, dx, ddy, dy
	152
	153	USE indices, &
	154	ONLY: nbgp, nx, nxl, nxlg, nxr, nxrg, ny, nyn, nyng, nys, nysg, nz, &
[4346]	155	nzb, nzt, wall_flags_total_0
[1819]	156
	157	USE kinds
	158
[4434]	159	USE netcdf_data_input_mod, &
	160	ONLY: check_existence, &
	161	close_input_file, &
	162	get_variable, &
	163	input_pids_wtm, &
	164	inquire_num_variables, &
	165	inquire_variable_names, &
	166	input_file_wtm, &
	167	num_var_pids, &
	168	open_read_file, &
	169	pids_id, &
	170	vars_pids
	171
[1819]	172	USE pegrid
	173
	174
	175	IMPLICIT NONE
	176
[1864]	177	PRIVATE
[1819]	178
[4411]	179
	180
	181	CHARACTER(LEN=100) :: variable_name !< name of output variable
	182	CHARACTER(LEN=30) :: nc_filename
	183
[1819]	184	!
	185	!-- Variables specified in the namelist wind_turbine_par
	186
[4447]	187	INTEGER(iwp) :: n_airfoils = 8 !< number of airfoils of the used turbine model (for ADM-R and ALM)
	188	INTEGER(iwp) :: n_turbines = 1 !< number of turbines
[1819]	189
[4411]	190
	191
	192	REAL(wp), DIMENSION(:), POINTER :: output_values_1d_pointer !< pointer for 2d output array
	193	REAL(wp), POINTER :: output_values_0d_pointer !< pointer for 2d output array
	194	REAL(wp), DIMENSION(:), ALLOCATABLE, TARGET :: output_values_1d_target !< pointer for 2d output array
	195	REAL(wp), TARGET :: output_values_0d_target !< pointer for 2d output array
	196
[4447]	197	LOGICAL :: pitch_control = .FALSE. !< switch for use of pitch controller
	198	LOGICAL :: speed_control = .FALSE. !< switch for use of speed controller
	199	LOGICAL :: yaw_control = .FALSE. !< switch for use of yaw controller
	200	LOGICAL :: tip_loss_correction = .FALSE. !< switch for use of tip loss correct.
[4411]	201
	202	LOGICAL :: initial_write_coordinates = .FALSE.
	203
[4426]	204	REAL(wp) :: dt_data_output_wtm = 0.0_wp !< data output interval
[4420]	205	REAL(wp) :: time_wtm = 0.0_wp !< time since last data output
	206
	207
[4447]	208	REAL(wp) :: segment_length_tangential = 1.0_wp !< length of the segments, the rotor area is divided into
	209	!< (in tangential direction, as factor of MIN(dx,dy,dz))
	210	REAL(wp) :: segment_width_radial = 0.5_wp !< width of the segments, the rotor area is divided into
	211	!< (in radial direction, as factor of MIN(dx,dy,dz))
	212	REAL(wp) :: time_turbine_on = 0.0_wp !< time at which turbines are started
	213	REAL(wp) :: tilt_angle = 0.0_wp !< vertical tilt_angle of the rotor [degree] ( positive = backwards )
[1819]	214
[4411]	215
[4447]	216	REAL(wp), DIMENSION(1:100) :: tower_diameter = 0.0_wp !< tower diameter [m]
	217	REAL(wp), DIMENSION(1:100), TARGET :: rotor_speed = 0.9_wp !< inital or constant rotor speed [rad/s]
	218	REAL(wp), DIMENSION(1:100) :: yaw_angle = 0.0_wp !< yaw angle [degree] ( clockwise, 0 = facing west )
	219	REAL(wp), DIMENSION(1:100) :: pitch_angle = 0.0_wp !< constant pitch angle
	220	REAL(wp), DIMENSION(1:100) :: hub_x = 9999999.9_wp !< position of hub in x-direction
	221	REAL(wp), DIMENSION(1:100) :: hub_y = 9999999.9_wp !< position of hub in y-direction
	222	REAL(wp), DIMENSION(1:100) :: hub_z = 9999999.9_wp !< position of hub in z-direction
	223	REAL(wp), DIMENSION(1:100) :: nacelle_radius = 0.0_wp !< nacelle diameter [m]
	224	REAL(wp), DIMENSION(1:100) :: rotor_radius = 63.0_wp !< rotor radius [m]
	225	! REAL(wp), DIMENSION(1:100) :: nacelle_cd = 0.85_wp !< drag coefficient for nacelle
	226	REAL(wp), DIMENSION(1:100) :: tower_cd = 1.2_wp !< drag coefficient for tower
[1839]	227
[1819]	228	!
	229	!-- Variables specified in the namelist for speed controller
	230	!-- Default values are from the NREL 5MW research turbine (Jonkman, 2008)
	231
[4447]	232	REAL(wp) :: generator_power_rated = 5296610.0_wp !< rated turbine power [W]
	233	REAL(wp) :: gear_ratio = 97.0_wp !< Gear ratio from rotor to generator
	234	REAL(wp) :: rotor_inertia = 34784179.0_wp !< Inertia of the rotor [kg*m2]
	235	REAL(wp) :: generator_inertia = 534.116_wp !< Inertia of the generator [kg*m2]
	236	REAL(wp) :: generator_efficiency = 0.944_wp !< Electric efficiency of the generator
	237	REAL(wp) :: gear_efficiency = 1.0_wp !< Loss between rotor and generator
	238	REAL(wp) :: air_density = 1.225_wp !< Air density to convert to W [kg/m3]
	239	REAL(wp) :: generator_speed_rated = 121.6805_wp !< Rated generator speed [rad/s]
	240	REAL(wp) :: generator_torque_max = 47402.91_wp !< Maximum of the generator torque [Nm]
	241	REAL(wp) :: region_2_slope = 2.332287_wp !< Slope constant for region 2
	242	REAL(wp) :: region_2_min = 91.21091_wp !< Lower generator speed boundary of region 2 [rad/s]
	243	REAL(wp) :: region_15_min = 70.16224_wp !< Lower generator speed boundary of region 1.5 [rad/s]
	244	REAL(wp) :: generator_torque_rate_max = 15000.0_wp !< Max generator torque increase [Nm/s]
	245	REAL(wp) :: pitch_rate = 8.0_wp !< Max pitch rate [degree/s]
[1839]	246
[1912]	247
[1819]	248	!
	249	!-- Variables specified in the namelist for yaw control
	250
[4447]	251	REAL(wp) :: yaw_speed = 0.005236_wp !< speed of the yaw actuator [rad/s]
	252	REAL(wp) :: yaw_misalignment_max = 0.08726_wp !< maximum tolerated yaw missalignment [rad]
	253	REAL(wp) :: yaw_misalignment_min = 0.008726_wp !< minimum yaw missalignment for which the actuator stops [rad]
[1839]	254
[1819]	255	!
	256	!-- Set flag for output files TURBINE_PARAMETERS
	257	TYPE file_status
	258	LOGICAL :: opened, opened_before
	259	END TYPE file_status
	260
[1912]	261	TYPE(file_status), DIMENSION(500) :: openfile_turb_mod = &
	262	file_status(.FALSE.,.FALSE.)
[1819]	263
	264	!
	265	!-- Variables for initialization of the turbine model
	266
[1839]	267	INTEGER(iwp) :: inot !< turbine loop index (turbine id)
	268	INTEGER(iwp) :: nsegs_max !< maximum number of segments (all turbines, required for allocation of arrays)
	269	INTEGER(iwp) :: nrings_max !< maximum number of rings (all turbines, required for allocation of arrays)
	270	INTEGER(iwp) :: ring !< ring loop index (ring number)
	271	INTEGER(iwp) :: upper_end !<
[1819]	272
[1839]	273	INTEGER(iwp), DIMENSION(1) :: lct !<
[1819]	274
[1912]	275	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: i_hub !< index belonging to x-position of the turbine
	276	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: i_smear !< index defining the area for the smearing of the forces (x-direction)
	277	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: j_hub !< index belonging to y-position of the turbine
	278	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: j_smear !< index defining the area for the smearing of the forces (y-direction)
	279	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: k_hub !< index belonging to hub height
	280	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: k_smear !< index defining the area for the smearing of the forces (z-direction)
	281	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nrings !< number of rings per turbine
	282	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: nsegs_total !< total number of segments per turbine
[1819]	283
[1912]	284	INTEGER(iwp), DIMENSION(:,:), ALLOCATABLE :: nsegs !< number of segments per ring and turbine
[1819]	285
[1912]	286	!
	287	!- parameters for the smearing from the rotor to the cartesian grid
[1864]	288	REAL(wp) :: pol_a !< parameter for the polynomial smearing fct
	289	REAL(wp) :: pol_b !< parameter for the polynomial smearing fct
[1912]	290	REAL(wp) :: delta_t_factor !<
[1864]	291	REAL(wp) :: eps_factor !<
[1839]	292	REAL(wp) :: eps_min !<
	293	REAL(wp) :: eps_min2 !<
[1819]	294
[1839]	295	!
	296	!-- Variables for the calculation of lift and drag coefficients
[1912]	297	REAL(wp), DIMENSION(:), ALLOCATABLE :: ard !<
	298	REAL(wp), DIMENSION(:), ALLOCATABLE :: crd !<
	299	REAL(wp), DIMENSION(:), ALLOCATABLE :: delta_r !< radial segment length
	300	REAL(wp), DIMENSION(:), ALLOCATABLE :: lrd !<
[1864]	301
[1912]	302	REAL(wp) :: accu_cl_cd_tab = 0.1_wp !< Accuracy of the interpolation of
	303	!< the lift and drag coeff [deg]
[1819]	304
[1912]	305	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: turb_cd_tab !< table of the blade drag coefficient
	306	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: turb_cl_tab !< table of the blade lift coefficient
[1819]	307
[1912]	308	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: nac_cd_surf !< 3d field of the tower drag coefficient
	309	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: tow_cd_surf !< 3d field of the nacelle drag coefficient
[1819]	310
	311	!
	312	!-- Variables for the calculation of the forces
[1912]	313
[1839]	314	REAL(wp) :: cur_r !<
	315	REAL(wp) :: phi_rotor !<
	316	REAL(wp) :: pre_factor !<
	317	REAL(wp) :: torque_seg !<
	318	REAL(wp) :: u_int_l !<
	319	REAL(wp) :: u_int_u !<
	320	REAL(wp) :: u_rot !<
	321	REAL(wp) :: v_int_l !<
	322	REAL(wp) :: v_int_u !<
	323	REAL(wp) :: w_int_l !<
	324	REAL(wp) :: w_int_u !<
[3832]	325	!$OMP THREADPRIVATE (cur_r, phi_rotor, pre_factor, torque_seg, u_int_l, u_int_u, u_rot, &
	326	!$OMP& v_int_l, v_int_u, w_int_l, w_int_u)
[1912]	327	!
	328	!- Tendencies from the nacelle and tower thrust
	329	REAL(wp) :: tend_nac_x = 0.0_wp !<
	330	REAL(wp) :: tend_tow_x = 0.0_wp !<
	331	REAL(wp) :: tend_nac_y = 0.0_wp !<
	332	REAL(wp) :: tend_tow_y = 0.0_wp !<
[3832]	333	!$OMP THREADPRIVATE (tend_nac_x, tend_tow_x, tend_nac_y, tend_tow_y)
[1819]	334
[1912]	335	REAL(wp), DIMENSION(:), ALLOCATABLE :: alpha_attack !<
	336	REAL(wp), DIMENSION(:), ALLOCATABLE :: chord !<
	337	REAL(wp), DIMENSION(:), ALLOCATABLE :: phi_rel !<
	338	REAL(wp), DIMENSION(:), ALLOCATABLE :: torque_total !<
	339	REAL(wp), DIMENSION(:), ALLOCATABLE :: thrust_rotor !<
	340	REAL(wp), DIMENSION(:), ALLOCATABLE :: turb_cl !<
	341	REAL(wp), DIMENSION(:), ALLOCATABLE :: turb_cd !<
	342	REAL(wp), DIMENSION(:), ALLOCATABLE :: vrel !<
	343	REAL(wp), DIMENSION(:), ALLOCATABLE :: vtheta !<
	344
	345	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: rbx, rby, rbz !< coordinates of the blade elements
	346	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: rotx, roty, rotz !< normal vectors to the rotor coordinates
	347
	348	!
	349	!- Fields for the interpolation of velocities on the rotor grid
	350	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: u_int !<
	351	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: u_int_1_l !<
	352	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: v_int !<
	353	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: v_int_1_l !<
	354	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: w_int !<
	355	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: w_int_1_l !<
	356
	357	!
	358	!- rotor tendencies on the segments
	359	REAL(wp), DIMENSION(:), ALLOCATABLE :: thrust_seg !<
	360	REAL(wp), DIMENSION(:), ALLOCATABLE :: torque_seg_y !<
	361	REAL(wp), DIMENSION(:), ALLOCATABLE :: torque_seg_z !<
	362
	363	!
	364	!- rotor tendencies on the rings
	365	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: thrust_ring !<
	366	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: torque_ring_y !<
	367	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: torque_ring_z !<
	368
	369	!
	370	!- rotor tendencies on rotor grids for all turbines
	371	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: thrust !<
	372	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: torque_y !<
	373	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: torque_z !<
	374
	375	!
	376	!- rotor tendencies on coordinate grid
	377	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: rot_tend_x !<
	378	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: rot_tend_y !<
	379	REAL(wp), DIMENSION(:,:,:), ALLOCATABLE :: rot_tend_z !<
	380	!
	381	!- variables for the rotation of the rotor coordinates
	382	REAL(wp), DIMENSION(1:100,1:3,1:3) :: rot_coord_trans !< matrix for rotation of rotor coordinates
	383
[1839]	384	REAL(wp), DIMENSION(1:3) :: rot_eigen_rad !<
	385	REAL(wp), DIMENSION(1:3) :: rot_eigen_azi !<
	386	REAL(wp), DIMENSION(1:3) :: rot_eigen_nor !<
	387	REAL(wp), DIMENSION(1:3) :: re !<
	388	REAL(wp), DIMENSION(1:3) :: rea !<
	389	REAL(wp), DIMENSION(1:3) :: ren !<
	390	REAL(wp), DIMENSION(1:3) :: rote !<
	391	REAL(wp), DIMENSION(1:3) :: rota !<
	392	REAL(wp), DIMENSION(1:3) :: rotn !<
[1819]	393
[1839]	394	!
	395	!-- Fixed variables for the speed controller
[1819]	396
[1912]	397	LOGICAL :: start_up = .TRUE. !<
[1864]	398
[1912]	399	REAL(wp) :: Fcorner !< corner freq for the controller low pass filter
[4447]	400	REAL(wp) :: region_25_min !< min region 2.5
[1912]	401	REAL(wp) :: om_rate !< rotor speed change
	402	REAL(wp) :: slope15 !< slope in region 1.5
[4447]	403	REAL(wp) :: region_25_slope !< slope in region 2.5
[1912]	404	REAL(wp) :: trq_rate !< torque change
	405	REAL(wp) :: vs_sysp !<
	406	REAL(wp) :: lp_coeff !< coeff for the controller low pass filter
[1819]	407
[4447]	408	REAL(wp), DIMENSION(100) :: rotor_speed_l = 0.0_wp !< local rot speed [rad/s]
[2563]	409
[1839]	410	!
	411	!-- Fixed variables for the yaw controller
[1819]	412
[1912]	413	REAL(wp), DIMENSION(:) , ALLOCATABLE :: yawdir !< direction to yaw
[4447]	414	REAL(wp), DIMENSION(:) , ALLOCATABLE :: yaw_angle_l !< local (cpu) yaw angle
[1912]	415	REAL(wp), DIMENSION(:) , ALLOCATABLE :: wd30_l !< local (cpu) long running avg of the wd
	416	REAL(wp), DIMENSION(:) , ALLOCATABLE :: wd2_l !< local (cpu) short running avg of the wd
	417	REAL(wp), DIMENSION(:) , ALLOCATABLE :: wdir !< wind direction at hub
	418	REAL(wp), DIMENSION(:) , ALLOCATABLE :: u_inflow !< wind speed at hub
	419	REAL(wp), DIMENSION(:) , ALLOCATABLE :: wdir_l !<
	420	REAL(wp), DIMENSION(:) , ALLOCATABLE :: u_inflow_l !<
	421	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: wd30 !<
	422	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: wd2 !<
	423	LOGICAL, DIMENSION(1:100) :: doyaw = .FALSE. !<
	424	INTEGER(iwp) :: WDLON !<
	425	INTEGER(iwp) :: WDSHO !<
[1819]	426
[2563]	427	!
	428	!-- Variables that have to be saved in the binary file for restarts
[4447]	429	REAL(wp), DIMENSION(1:100) :: pitch_angle_old = 0.0_wp !< old constant pitch angle
	430	REAL(wp), DIMENSION(1:100) :: generator_speed = 0.0_wp !< curr. generator speed
	431	REAL(wp), DIMENSION(1:100) :: generator_speed_f = 0.0_wp !< filtered generator speed
	432	REAL(wp), DIMENSION(1:100) :: generator_speed_old = 0.0_wp !< last generator speed
	433	REAL(wp), DIMENSION(1:100) :: generator_speed_f_old = 0.0_wp !< last filtered generator speed
[2563]	434	REAL(wp), DIMENSION(1:100) :: torque_gen = 0.0_wp !< generator torque
	435	REAL(wp), DIMENSION(1:100) :: torque_gen_old = 0.0_wp !< last generator torque
[1819]	436
[2563]	437
[1839]	438	SAVE
[1819]	439
[1839]	440
	441	INTERFACE wtm_parin
	442	MODULE PROCEDURE wtm_parin
	443	END INTERFACE wtm_parin
[2563]	444
[1912]	445	INTERFACE wtm_check_parameters
	446	MODULE PROCEDURE wtm_check_parameters
	447	END INTERFACE wtm_check_parameters
[3875]	448
[4411]	449	INTERFACE wtm_data_output
	450	MODULE PROCEDURE wtm_data_output
	451	END INTERFACE wtm_data_output
	452
[1839]	453	INTERFACE wtm_init_arrays
	454	MODULE PROCEDURE wtm_init_arrays
	455	END INTERFACE wtm_init_arrays
	456
	457	INTERFACE wtm_init
	458	MODULE PROCEDURE wtm_init
	459	END INTERFACE wtm_init
[2553]	460
[4411]	461	INTERFACE wtm_init_output
	462	MODULE PROCEDURE wtm_init_output
	463	END INTERFACE wtm_init_output
	464
[3875]	465	INTERFACE wtm_actions
	466	MODULE PROCEDURE wtm_actions
	467	MODULE PROCEDURE wtm_actions_ij
	468	END INTERFACE wtm_actions
[1819]	469
[3875]	470	INTERFACE wtm_rrd_global
	471	MODULE PROCEDURE wtm_rrd_global
	472	END INTERFACE wtm_rrd_global
[1819]	473
[3875]	474	INTERFACE wtm_wrd_global
	475	MODULE PROCEDURE wtm_wrd_global
	476	END INTERFACE wtm_wrd_global
[2563]	477
[3875]	478
	479	PUBLIC &
[4420]	480	dt_data_output_wtm, &
	481	time_wtm, &
	482	wind_turbine
	483
	484	PUBLIC &
[3875]	485	wtm_parin, &
	486	wtm_check_parameters, &
[4411]	487	wtm_data_output, &
[3875]	488	wtm_init_arrays, &
[4411]	489	wtm_init_output, &
[3875]	490	wtm_init, &
	491	wtm_actions, &
	492	wtm_rrd_global, &
	493	wtm_wrd_global
	494
	495
[1819]	496	CONTAINS
	497
	498
	499	!------------------------------------------------------------------------------!
	500	! Description:
	501	! ------------
[1839]	502	!> Parin for &wind_turbine_par for wind turbine model
[1819]	503	!------------------------------------------------------------------------------!
[1839]	504	SUBROUTINE wtm_parin
[1819]	505
[4434]	506	IMPLICIT NONE
[1819]	507
[1839]	508	CHARACTER (LEN=80) :: line !< dummy string that contains the current line of the parameter file
	509
[2932]	510	NAMELIST /wind_turbine_parameters/ &
[4447]	511	air_density, tower_diameter, dt_data_output_wtm, &
	512	gear_efficiency, gear_ratio, generator_efficiency, &
	513	generator_inertia, rotor_inertia, yaw_misalignment_max, &
	514	generator_torque_max, generator_torque_rate_max, yaw_misalignment_min, &
	515	region_15_min, region_2_min, n_airfoils, n_turbines, &
	516	rotor_speed, yaw_angle, pitch_angle, pitch_control, &
	517	generator_speed_rated, generator_power_rated, hub_x, hub_y, hub_z,&
	518	nacelle_radius, rotor_radius, segment_length_tangential, segment_width_radial, &
	519	region_2_slope, speed_control, tilt_angle, time_turbine_on, &
	520	tower_cd, pitch_rate, &
	521	yaw_control, yaw_speed, tip_loss_correction
	522	! , nacelle_cd
	523
[1819]	524	!
[1839]	525	!-- Try to find wind turbine model package
	526	REWIND ( 11 )
	527	line = ' '
[3248]	528	DO WHILE ( INDEX( line, '&wind_turbine_parameters' ) == 0 )
[3246]	529	READ ( 11, '(A)', END=12 ) line
[1839]	530	ENDDO
	531	BACKSPACE ( 11 )
	532
	533	!
	534	!-- Read user-defined namelist
[4420]	535	READ ( 11, wind_turbine_parameters, ERR = 10, END = 12 )
[2932]	536	!
	537	!-- Set flag that indicates that the wind turbine model is switched on
	538	wind_turbine = .TRUE.
	539
[4420]	540	GOTO 12
[2932]	541
[3246]	542	10 BACKSPACE( 11 )
[3248]	543	READ( 11 , '(A)') line
	544	CALL parin_fail_message( 'wind_turbine_parameters', line )
[3246]	545
[4420]	546	12 CONTINUE ! TBD Change from continue, mit ierrn machen
[1839]	547
	548	END SUBROUTINE wtm_parin
	549
[2563]	550
	551	!------------------------------------------------------------------------------!
	552	! Description:
	553	! ------------
[2894]	554	!> This routine writes the respective restart data.
[2576]	555	!------------------------------------------------------------------------------!
[2894]	556	SUBROUTINE wtm_wrd_global
[2576]	557
	558
[2563]	559	IMPLICIT NONE
[4420]	560
[2776]	561
[4447]	562	CALL wrd_write_string( 'generator_speed' )
	563	WRITE ( 14 ) generator_speed
[2894]	564
[4447]	565	CALL wrd_write_string( 'generator_speed_f' )
	566	WRITE ( 14 ) generator_speed_f
[2894]	567
[4447]	568	CALL wrd_write_string( 'generator_speed_f_old' )
	569	WRITE ( 14 ) generator_speed_f_old
[2894]	570
[4447]	571	CALL wrd_write_string( 'generator_speed_old' )
	572	WRITE ( 14 ) generator_speed_old
[2894]	573
[4447]	574	CALL wrd_write_string( 'rotor_speed' )
	575	WRITE ( 14 ) rotor_speed
[2894]	576
[4447]	577	CALL wrd_write_string( 'yaw_angle' )
	578	WRITE ( 14 ) yaw_angle
[2894]	579
[4447]	580	CALL wrd_write_string( 'pitch_angle' )
	581	WRITE ( 14 ) pitch_angle
[2894]	582
[4447]	583	CALL wrd_write_string( 'pitch_angle_old' )
	584	WRITE ( 14 ) pitch_angle_old
[2894]	585
	586	CALL wrd_write_string( 'torque_gen' )
[2563]	587	WRITE ( 14 ) torque_gen
[2894]	588
	589	CALL wrd_write_string( 'torque_gen_old' )
[2563]	590	WRITE ( 14 ) torque_gen_old
[2894]	591
[2563]	592
[2894]	593	END SUBROUTINE wtm_wrd_global
[2563]	594
	595
	596	!------------------------------------------------------------------------------!
	597	! Description:
	598	! ------------
	599	!> This routine reads the respective restart data.
	600	!------------------------------------------------------------------------------!
[2894]	601	SUBROUTINE wtm_rrd_global( found )
[2563]	602
	603
[2894]	604	USE control_parameters, &
	605	ONLY: length, restart_string
	606
	607
[2563]	608	IMPLICIT NONE
	609
[2894]	610	LOGICAL, INTENT(OUT) :: found
[2563]	611
	612
[2894]	613	found = .TRUE.
[2563]	614
	615
[2894]	616	SELECT CASE ( restart_string(1:length) )
[2563]	617
[4447]	618	CASE ( 'generator_speed' )
	619	READ ( 13 ) generator_speed
	620	CASE ( 'generator_speed_f' )
	621	READ ( 13 ) generator_speed_f
	622	CASE ( 'generator_speed_f_old' )
	623	READ ( 13 ) generator_speed_f_old
	624	CASE ( 'generator_speed_old' )
	625	READ ( 13 ) generator_speed_old
	626	CASE ( 'rotor_speed' )
	627	READ ( 13 ) rotor_speed
	628	CASE ( 'yaw_angle' )
	629	READ ( 13 ) yaw_angle
	630	CASE ( 'pitch_angle' )
	631	READ ( 13 ) pitch_angle
	632	CASE ( 'pitch_angle_old' )
	633	READ ( 13 ) pitch_angle_old
[2894]	634	CASE ( 'torque_gen' )
	635	READ ( 13 ) torque_gen
	636	CASE ( 'torque_gen_old' )
	637	READ ( 13 ) torque_gen_old
[2563]	638
[2894]	639	CASE DEFAULT
[2563]	640
[2894]	641	found = .FALSE.
[2563]	642
[2894]	643	END SELECT
	644
[2563]	645
[2894]	646	END SUBROUTINE wtm_rrd_global
	647
	648
[2563]	649	!------------------------------------------------------------------------------!
	650	! Description:
	651	! ------------
	652	!> Check namelist parameter
	653	!------------------------------------------------------------------------------!
[1912]	654	SUBROUTINE wtm_check_parameters
	655
	656	IMPLICIT NONE
[4436]	657
[4434]	658	IF ( .NOT. input_pids_wtm ) THEN
	659	IF ( ( .NOT.speed_control ) .AND. pitch_control ) THEN
	660	message_string = 'pitch_control = .TRUE. requires '// &
	661	'speed_control = .TRUE.'
	662	CALL message( 'wtm_check_parameters', 'PA0461', 1, 2, 0, 6, 0 )
	663	ENDIF
[4436]	664
[4447]	665	IF ( ANY( rotor_speed(1:n_turbines) < 0.0 ) ) THEN
	666	message_string = 'rotor_speed < 0.0, Please set rotor_speed to ' // &
[4434]	667	'a value equal or larger than zero'
	668	CALL message( 'wtm_check_parameters', 'PA0462', 1, 2, 0, 6, 0 )
	669	ENDIF
[4436]	670
	671
[4447]	672	IF ( ANY( hub_x(1:n_turbines) == 9999999.9_wp ) .OR. &
	673	ANY( hub_y(1:n_turbines) == 9999999.9_wp ) .OR. &
	674	ANY( hub_z(1:n_turbines) == 9999999.9_wp ) ) THEN
[4434]	675
[4447]	676	message_string = 'hub_x, hub_y, hub_z ' // &
[4434]	677	'have to be given for each turbine.'
	678	CALL message( 'wtm_check_parameters', 'PA0463', 1, 2, 0, 6, 0 )
	679	ENDIF
[1912]	680	ENDIF
[4434]	681
[1912]	682	END SUBROUTINE wtm_check_parameters
[4420]	683	!
[1912]	684
[1839]	685	!------------------------------------------------------------------------------!
	686	! Description:
	687	! ------------
	688	!> Allocate wind turbine model arrays
	689	!------------------------------------------------------------------------------!
	690	SUBROUTINE wtm_init_arrays
	691
	692	IMPLICIT NONE
	693
[1864]	694	REAL(wp) :: delta_r_factor !<
	695	REAL(wp) :: delta_r_init !<
	696
[4436]	697	#if defined( __netcdf )
[1839]	698	!
[4434]	699	! Read wtm input file (netcdf) if it exists
	700	IF ( input_pids_wtm ) THEN
	701
	702	!
	703	!-- Open the wtm input file
	704	CALL open_read_file( TRIM( input_file_wtm ) // &
	705	TRIM( coupling_char ), pids_id )
	706
	707	CALL inquire_num_variables( pids_id, num_var_pids )
	708
	709	!
	710	!-- Allocate memory to store variable names and read them
	711	ALLOCATE( vars_pids(1:num_var_pids) )
	712	CALL inquire_variable_names( pids_id, vars_pids )
	713
	714	!
	715	!-- Input of all wtm parameters
[4447]	716	IF ( check_existence( vars_pids, 'tower_diameter' ) ) THEN
	717	CALL get_variable( pids_id, 'tower_diameter', tower_diameter(1:n_turbines))
[4434]	718	ENDIF
	719
[4447]	720	IF ( check_existence( vars_pids, 'rotor_speed' ) ) THEN
	721	CALL get_variable( pids_id, 'rotor_speed', rotor_speed(1:n_turbines))
[4434]	722	ENDIF
	723
[4447]	724	IF ( check_existence( vars_pids, 'pitch_angle' ) ) THEN
	725	CALL get_variable( pids_id, 'pitch_angle', pitch_angle(1:n_turbines))
[4434]	726	ENDIF
	727
[4447]	728	IF ( check_existence( vars_pids, 'yaw_angle' ) ) THEN
	729	CALL get_variable( pids_id, 'yaw_angle', yaw_angle(1:n_turbines))
[4434]	730	ENDIF
	731
[4447]	732	IF ( check_existence( vars_pids, 'hub_x' ) ) THEN
	733	CALL get_variable( pids_id, 'hub_x', hub_x(1:n_turbines))
[4434]	734	ENDIF
	735
[4447]	736	IF ( check_existence( vars_pids, 'hub_y' ) ) THEN
	737	CALL get_variable( pids_id, 'hub_y', hub_y(1:n_turbines))
[4434]	738	ENDIF
	739
[4447]	740	IF ( check_existence( vars_pids, 'hub_z' ) ) THEN
	741	CALL get_variable( pids_id, 'hub_z', hub_z(1:n_turbines))
[4434]	742	ENDIF
	743
[4447]	744	IF ( check_existence( vars_pids, 'nacelle_radius' ) ) THEN
	745	CALL get_variable( pids_id, 'nacelle_radius', nacelle_radius(1:n_turbines))
[4434]	746	ENDIF
	747
[4447]	748	IF ( check_existence( vars_pids, 'rotor_radius' ) ) THEN
	749	CALL get_variable( pids_id, 'rotor_radius', rotor_radius(1:n_turbines))
[4434]	750	ENDIF
	751	!
[4447]	752	! IF ( check_existence( vars_pids, 'nacelle_cd' ) ) THEN
	753	! CALL get_variable( pids_id, 'nacelle_cd', nacelle_cd(1:n_turbines))
[4434]	754	! ENDIF
	755
[4447]	756	IF ( check_existence( vars_pids, 'tower_cd' ) ) THEN
	757	CALL get_variable( pids_id, 'tower_cd', tower_cd(1:n_turbines))
[4434]	758	ENDIF
	759	!
	760	!-- Close wtm input file
	761	CALL close_input_file( pids_id )
	762
	763	ENDIF
	764	#endif
	765
	766	!
[1839]	767	!-- To be able to allocate arrays with dimension of rotor rings and segments,
[1819]	768	!-- the maximum possible numbers of rings and segments have to be calculated:
	769
[4447]	770	ALLOCATE( nrings(1:n_turbines) )
	771	ALLOCATE( delta_r(1:n_turbines) )
[1819]	772
	773	nrings(:) = 0
	774	delta_r(:) = 0.0_wp
	775
	776	!
	777	!-- Thickness (radial) of each ring and length (tangential) of each segment:
[4447]	778	delta_r_factor = segment_width_radial
	779	delta_t_factor = segment_length_tangential
[3065]	780	delta_r_init = delta_r_factor * MIN( dx, dy, dz(1))
[1819]	781
[4447]	782	DO inot = 1, n_turbines
[1819]	783	!
	784	!-- Determine number of rings:
[4447]	785	nrings(inot) = NINT( rotor_radius(inot) / delta_r_init )
[1819]	786
[4447]	787	delta_r(inot) = rotor_radius(inot) / nrings(inot)
[1819]	788
	789	ENDDO
	790
	791	nrings_max = MAXVAL(nrings)
	792
[4447]	793	ALLOCATE( nsegs(1:nrings_max,1:n_turbines) )
	794	ALLOCATE( nsegs_total(1:n_turbines) )
[1819]	795
	796	nsegs(:,:) = 0
	797	nsegs_total(:) = 0
	798
	799
[4447]	800	DO inot = 1, n_turbines
[1819]	801	DO ring = 1, nrings(inot)
	802	!
	803	!-- Determine number of segments for each ring:
[1839]	804	nsegs(ring,inot) = MAX( 8, CEILING( delta_r_factor * pi * &
	805	( 2.0_wp * ring - 1.0_wp ) / &
	806	delta_t_factor ) )
[1819]	807	ENDDO
	808	!
	809	!-- Total sum of all rotor segments:
[1839]	810	nsegs_total(inot) = SUM( nsegs(:,inot) )
[1819]	811
	812	ENDDO
	813
	814	!
	815	!-- Maximum number of segments per ring:
	816	nsegs_max = MAXVAL(nsegs)
	817
[1864]	818	!!
	819	!!-- TODO: Folgendes im Header ausgeben!
	820	! IF ( myid == 0 ) THEN
	821	! PRINT*, 'nrings(1) = ', nrings(1)
	822	! PRINT*, '--------------------------------------------------'
	823	! PRINT*, 'nsegs(:,1) = ', nsegs(:,1)
	824	! PRINT*, '--------------------------------------------------'
	825	! PRINT*, 'nrings_max = ', nrings_max
	826	! PRINT*, 'nsegs_max = ', nsegs_max
	827	! PRINT*, 'nsegs_total(1) = ', nsegs_total(1)
	828	! ENDIF
[1819]	829
	830
	831	!
	832	!-- Allocate 1D arrays (dimension = number of turbines)
[4447]	833	ALLOCATE( i_hub(1:n_turbines) )
	834	ALLOCATE( i_smear(1:n_turbines) )
	835	ALLOCATE( j_hub(1:n_turbines) )
	836	ALLOCATE( j_smear(1:n_turbines) )
	837	ALLOCATE( k_hub(1:n_turbines) )
	838	ALLOCATE( k_smear(1:n_turbines) )
	839	ALLOCATE( torque_total(1:n_turbines) )
	840	ALLOCATE( thrust_rotor(1:n_turbines) )
[1819]	841
	842	!
	843	!-- Allocation of the 1D arrays for yaw control
[4447]	844	ALLOCATE( yawdir(1:n_turbines) )
	845	ALLOCATE( u_inflow(1:n_turbines) )
	846	ALLOCATE( wdir(1:n_turbines) )
	847	ALLOCATE( u_inflow_l(1:n_turbines) )
	848	ALLOCATE( wdir_l(1:n_turbines) )
	849	ALLOCATE( yaw_angle_l(1:n_turbines) )
[1819]	850
	851	!
	852	!-- Allocate 1D arrays (dimension = number of rotor segments)
	853	ALLOCATE( alpha_attack(1:nsegs_max) )
	854	ALLOCATE( chord(1:nsegs_max) )
	855	ALLOCATE( phi_rel(1:nsegs_max) )
	856	ALLOCATE( thrust_seg(1:nsegs_max) )
	857	ALLOCATE( torque_seg_y(1:nsegs_max) )
	858	ALLOCATE( torque_seg_z(1:nsegs_max) )
[1839]	859	ALLOCATE( turb_cd(1:nsegs_max) )
	860	ALLOCATE( turb_cl(1:nsegs_max) )
[1819]	861	ALLOCATE( vrel(1:nsegs_max) )
	862	ALLOCATE( vtheta(1:nsegs_max) )
	863
	864	!
	865	!-- Allocate 2D arrays (dimension = number of rotor rings and segments)
	866	ALLOCATE( rbx(1:nrings_max,1:nsegs_max) )
	867	ALLOCATE( rby(1:nrings_max,1:nsegs_max) )
	868	ALLOCATE( rbz(1:nrings_max,1:nsegs_max) )
	869	ALLOCATE( thrust_ring(1:nrings_max,1:nsegs_max) )
	870	ALLOCATE( torque_ring_y(1:nrings_max,1:nsegs_max) )
	871	ALLOCATE( torque_ring_z(1:nrings_max,1:nsegs_max) )
	872
	873	!
	874	!-- Allocate additional 2D arrays
[4447]	875	ALLOCATE( rotx(1:n_turbines,1:3) )
	876	ALLOCATE( roty(1:n_turbines,1:3) )
	877	ALLOCATE( rotz(1:n_turbines,1:3) )
[1819]	878
	879	!
	880	!-- Allocate 3D arrays (dimension = number of grid points)
[1912]	881	ALLOCATE( nac_cd_surf(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	882	ALLOCATE( rot_tend_x(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	883	ALLOCATE( rot_tend_y(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	884	ALLOCATE( rot_tend_z(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1819]	885	ALLOCATE( thrust(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	886	ALLOCATE( torque_y(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
	887	ALLOCATE( torque_z(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1912]	888	ALLOCATE( tow_cd_surf(nzb:nzt+1,nysg:nyng,nxlg:nxrg) )
[1819]	889
	890	!
	891	!-- Allocate additional 3D arrays
[4447]	892	ALLOCATE( u_int(1:n_turbines,1:nrings_max,1:nsegs_max) )
	893	ALLOCATE( u_int_1_l(1:n_turbines,1:nrings_max,1:nsegs_max) )
	894	ALLOCATE( v_int(1:n_turbines,1:nrings_max,1:nsegs_max) )
	895	ALLOCATE( v_int_1_l(1:n_turbines,1:nrings_max,1:nsegs_max) )
	896	ALLOCATE( w_int(1:n_turbines,1:nrings_max,1:nsegs_max) )
	897	ALLOCATE( w_int_1_l(1:n_turbines,1:nrings_max,1:nsegs_max) )
[1819]	898
	899	!
	900	!-- All of the arrays are initialized with a value of zero:
	901	i_hub(:) = 0
	902	i_smear(:) = 0
	903	j_hub(:) = 0
	904	j_smear(:) = 0
	905	k_hub(:) = 0
	906	k_smear(:) = 0
[1912]	907
[1819]	908	torque_total(:) = 0.0_wp
[1912]	909	thrust_rotor(:) = 0.0_wp
[1819]	910
[2563]	911	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
[4447]	912	generator_speed(:) = 0.0_wp
	913	generator_speed_old(:) = 0.0_wp
	914	generator_speed_f(:) = 0.0_wp
	915	generator_speed_f_old(:) = 0.0_wp
	916	pitch_angle_old(:) = 0.0_wp
[2563]	917	torque_gen(:) = 0.0_wp
	918	torque_gen_old(:) = 0.0_wp
	919	ENDIF
	920
[1819]	921	yawdir(:) = 0.0_wp
[3069]	922	wdir_l(:) = 0.0_wp
[1819]	923	wdir(:) = 0.0_wp
	924	u_inflow(:) = 0.0_wp
[3069]	925	u_inflow_l(:) = 0.0_wp
[4447]	926	yaw_angle_l(:) = 0.0_wp
[1819]	927
	928	!
	929	!-- Allocate 1D arrays (dimension = number of rotor segments)
	930	alpha_attack(:) = 0.0_wp
	931	chord(:) = 0.0_wp
	932	phi_rel(:) = 0.0_wp
	933	thrust_seg(:) = 0.0_wp
	934	torque_seg_y(:) = 0.0_wp
	935	torque_seg_z(:) = 0.0_wp
[1864]	936	turb_cd(:) = 0.0_wp
	937	turb_cl(:) = 0.0_wp
[1819]	938	vrel(:) = 0.0_wp
	939	vtheta(:) = 0.0_wp
	940
	941	rbx(:,:) = 0.0_wp
	942	rby(:,:) = 0.0_wp
	943	rbz(:,:) = 0.0_wp
	944	thrust_ring(:,:) = 0.0_wp
	945	torque_ring_y(:,:) = 0.0_wp
	946	torque_ring_z(:,:) = 0.0_wp
	947
	948	rotx(:,:) = 0.0_wp
	949	roty(:,:) = 0.0_wp
	950	rotz(:,:) = 0.0_wp
	951
[1912]	952	nac_cd_surf(:,:,:) = 0.0_wp
	953	rot_tend_x(:,:,:) = 0.0_wp
	954	rot_tend_y(:,:,:) = 0.0_wp
	955	rot_tend_z(:,:,:) = 0.0_wp
[1819]	956	thrust(:,:,:) = 0.0_wp
	957	torque_y(:,:,:) = 0.0_wp
	958	torque_z(:,:,:) = 0.0_wp
[1912]	959	tow_cd_surf(:,:,:) = 0.0_wp
[1819]	960
	961	u_int(:,:,:) = 0.0_wp
	962	u_int_1_l(:,:,:) = 0.0_wp
	963	v_int(:,:,:) = 0.0_wp
	964	v_int_1_l(:,:,:) = 0.0_wp
	965	w_int(:,:,:) = 0.0_wp
	966	w_int_1_l(:,:,:) = 0.0_wp
	967
	968
[1839]	969	END SUBROUTINE wtm_init_arrays
[1819]	970
	971
	972	!------------------------------------------------------------------------------!
	973	! Description:
	974	! ------------
[1839]	975	!> Initialization of the wind turbine model
[1819]	976	!------------------------------------------------------------------------------!
[1839]	977	SUBROUTINE wtm_init
[1819]	978
[1839]	979
[3065]	980	USE control_parameters, &
	981	ONLY: dz_stretch_level_start
	982
[4457]	983	USE exchange_horiz_mod, &
	984	ONLY: exchange_horiz
	985
[1819]	986	IMPLICIT NONE
	987
[4411]	988
	989
[1819]	990	INTEGER(iwp) :: i !< running index
	991	INTEGER(iwp) :: j !< running index
	992	INTEGER(iwp) :: k !< running index
[1864]	993
[4411]	994
[1819]	995	!
[1864]	996	!-- Help variables for the smearing function
	997	REAL(wp) :: eps_kernel !<
	998
[1839]	999	!
[1864]	1000	!-- Help variables for calculation of the tower drag
	1001	INTEGER(iwp) :: tower_n !<
	1002	INTEGER(iwp) :: tower_s !<
	1003
	1004	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: circle_points !<
	1005
	1006	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: index_nacb !<
	1007	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: index_nacl !<
	1008	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: index_nacr !<
	1009	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: index_nact !<
	1010
[3885]	1011	IF ( debug_output ) CALL debug_message( 'wtm_init', 'start' )
[3685]	1012
[4447]	1013	ALLOCATE( index_nacb(1:n_turbines) )
	1014	ALLOCATE( index_nacl(1:n_turbines) )
	1015	ALLOCATE( index_nacr(1:n_turbines) )
	1016	ALLOCATE( index_nact(1:n_turbines) )
[1819]	1017
[1839]	1018	!
[1819]	1019	!------------------------------------------------------------------------------!
[1839]	1020	!-- Calculation of parameters for the regularization kernel
	1021	!-- (smearing of the forces)
[1819]	1022	!------------------------------------------------------------------------------!
	1023	!
[1839]	1024	!-- In the following, some of the required parameters for the smearing will
	1025	!-- be calculated:
[1819]	1026
[1839]	1027	!-- The kernel is set equal to twice the grid spacing which has turned out to
	1028	!-- be a reasonable value (see e.g. Troldborg et al. (2013), Wind Energy,
[1819]	1029	!-- DOI: 10.1002/we.1608):
	1030	eps_kernel = 2.0_wp * dx
	1031	!
[1839]	1032	!-- The zero point (eps_min) of the polynomial function must be the following
	1033	!-- if the integral of the polynomial function (for values < eps_min) shall
	1034	!-- be equal to the integral of the Gaussian function used before:
	1035	eps_min = ( 105.0_wp / 32.0_wp )*( 1.0_wp / 3.0_wp ) &
	1036	pi*( 1.0_wp / 6.0_wp ) eps_kernel
[1819]	1037	!
[3065]	1038	!-- Stretching (non-uniform grid spacing) is not considered in the wind
	1039	!-- turbine model. Therefore, vertical stretching has to be applied above
	1040	!-- the area where the wtm is active. ABS (...) is required because the
	1041	!-- default value of dz_stretch_level_start is -9999999.9_wp (negative).
[4447]	1042	IF ( ABS( dz_stretch_level_start(1) ) <= MAXVAL(hub_z(1:n_turbines)) + &
	1043	MAXVAL(rotor_radius(1:n_turbines)) + &
[3174]	1044	eps_min) THEN
[3065]	1045	WRITE( message_string, * ) 'The lowest level where vertical ', &
	1046	'stretching is applied &have to be ', &
[4447]	1047	'greater than ',MAXVAL(hub_z(1:n_turbines)) &
	1048	+ MAXVAL(rotor_radius(1:n_turbines)) + eps_min
[3066]	1049	CALL message( 'wtm_init', 'PA0484', 1, 2, 0, 6, 0 )
[3065]	1050	ENDIF
	1051	!
[1819]	1052	!-- Square of eps_min:
	1053	eps_min2 = eps_min**2
	1054	!
	1055	!-- Parameters in the polynomial function:
[1864]	1056	pol_a = 1.0_wp / eps_min**4
	1057	pol_b = 2.0_wp / eps_min**2
[1819]	1058	!
[1839]	1059	!-- Normalization factor which is the inverse of the integral of the smearing
	1060	!-- function:
	1061	eps_factor = 105.0_wp / ( 32.0_wp * pi * eps_min**3 )
	1062
[1864]	1063	!-- Change tilt angle to rad:
[4447]	1064	tilt_angle = tilt_angle * pi / 180.0_wp
[1864]	1065
[1819]	1066	!
[1864]	1067	!-- Change yaw angle to rad:
[2563]	1068	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
[4447]	1069	yaw_angle(:) = yaw_angle(:) * pi / 180.0_wp
[2563]	1070	ENDIF
[1819]	1071
[1864]	1072
[4447]	1073	DO inot = 1, n_turbines
[1819]	1074	!
[1864]	1075	!-- Rotate the rotor coordinates in case yaw and tilt are defined
	1076	CALL wtm_rotate_rotor( inot )
[1819]	1077
	1078	!
	1079	!-- Determine the indices of the hub height
[4447]	1080	i_hub(inot) = INT( hub_x(inot) / dx )
	1081	j_hub(inot) = INT( ( hub_y(inot) + 0.5_wp * dy ) / dy )
	1082	k_hub(inot) = INT( ( hub_z(inot) + 0.5_wp * dz(1) ) / dz(1) )
[1819]	1083
	1084	!
	1085	!-- Determining the area to which the smearing of the forces is applied.
[1839]	1086	!-- As smearing now is effectively applied only for distances smaller than
	1087	!-- eps_min, the smearing area can be further limited and regarded as a
	1088	!-- function of eps_min:
[4447]	1089	i_smear(inot) = CEILING( ( rotor_radius(inot) + eps_min ) / dx )
	1090	j_smear(inot) = CEILING( ( rotor_radius(inot) + eps_min ) / dy )
	1091	k_smear(inot) = CEILING( ( rotor_radius(inot) + eps_min ) / dz(1) )
[1864]	1092
[1819]	1093	ENDDO
	1094
	1095	!
[2792]	1096	!-- Call the wtm_init_speed_control subroutine and calculate the local
[4447]	1097	!-- rotor_speed for the respective processor.
[2792]	1098	IF ( speed_control) THEN
	1099
[3875]	1100	CALL wtm_init_speed_control
[2792]	1101
	1102	IF ( TRIM( initializing_actions ) == 'read_restart_data' ) THEN
	1103
[4447]	1104	DO inot = 1, n_turbines
[2792]	1105
	1106	IF ( nxl > i_hub(inot) ) THEN
	1107	torque_gen(inot) = 0.0_wp
[4447]	1108	generator_speed_f(inot) = 0.0_wp
	1109	rotor_speed_l(inot) = 0.0_wp
[2792]	1110	ENDIF
	1111
	1112	IF ( nxr < i_hub(inot) ) THEN
	1113	torque_gen(inot) = 0.0_wp
[4447]	1114	generator_speed_f(inot) = 0.0_wp
	1115	rotor_speed_l(inot) = 0.0_wp
[2792]	1116	ENDIF
	1117
	1118	IF ( nys > j_hub(inot) ) THEN
	1119	torque_gen(inot) = 0.0_wp
[4447]	1120	generator_speed_f(inot) = 0.0_wp
	1121	rotor_speed_l(inot) = 0.0_wp
[2792]	1122	ENDIF
	1123
	1124	IF ( nyn < j_hub(inot) ) THEN
	1125	torque_gen(inot) = 0.0_wp
[4447]	1126	generator_speed_f(inot) = 0.0_wp
	1127	rotor_speed_l(inot) = 0.0_wp
[2792]	1128	ENDIF
	1129
	1130	IF ( ( nxl <= i_hub(inot) ) .AND. ( nxr >= i_hub(inot) ) ) THEN
	1131	IF ( ( nys <= j_hub(inot) ) .AND. ( nyn >= j_hub(inot) ) ) THEN
	1132
[4447]	1133	rotor_speed_l(inot) = generator_speed(inot) / gear_ratio
[2792]	1134
	1135	ENDIF
	1136	ENDIF
	1137
	1138	END DO
	1139
	1140	ENDIF
	1141
	1142	ENDIF
	1143
	1144	!
[1819]	1145	!------------------------------------------------------------------------------!
[1839]	1146	!-- Determine the area within each grid cell that overlaps with the area
	1147	!-- of the nacelle and the tower (needed for calculation of the forces)
[1819]	1148	!------------------------------------------------------------------------------!
	1149	!
	1150	!-- Note: so far this is only a 2D version, in that the mean flow is
	1151	!-- perpendicular to the rotor area.
	1152
	1153	!
	1154	!-- Allocation of the array containing information on the intersection points
	1155	!-- between rotor disk and the numerical grid:
	1156	upper_end = ( ny + 1 ) * 10000
	1157
	1158	ALLOCATE( circle_points(1:2,1:upper_end) )
[1839]	1159
	1160	circle_points(:,:) = 0.0_wp
[1819]	1161
[1839]	1162
[4447]	1163	DO inot = 1, n_turbines ! loop over number of turbines
[1819]	1164	!
[1839]	1165	!-- Determine the grid index (u-grid) that corresponds to the location of
	1166	!-- the rotor center (reduces the amount of calculations in the case that
	1167	!-- the mean flow is perpendicular to the rotor area):
[1819]	1168	i = i_hub(inot)
	1169
	1170	!
[1839]	1171	!-- Determine the left and the right edge of the nacelle (corresponding
	1172	!-- grid point indices):
[4447]	1173	index_nacl(inot) = INT( ( hub_y(inot) - nacelle_radius(inot) + 0.5_wp * dy ) / dy )
	1174	index_nacr(inot) = INT( ( hub_y(inot) + nacelle_radius(inot) + 0.5_wp * dy ) / dy )
[1819]	1175	!
[1839]	1176	!-- Determine the bottom and the top edge of the nacelle (corresponding
	1177	!-- grid point indices).The grid point index has to be increased by 1, as
	1178	!-- the first level for the u-component (index 0) is situated below the
	1179	!-- surface. All points between z=0 and z=dz/s would already be contained
	1180	!-- in grid box 1.
[4447]	1181	index_nacb(inot) = INT( ( hub_z(inot) - nacelle_radius(inot) ) / dz(1) ) + 1
	1182	index_nact(inot) = INT( ( hub_z(inot) + nacelle_radius(inot) ) / dz(1) ) + 1
[1819]	1183
	1184	!
	1185	!-- Determine the indices of the grid boxes containing the left and
[1864]	1186	!-- the right boundaries of the tower:
[4447]	1187	tower_n = ( hub_y(inot) + 0.5_wp * tower_diameter(inot) - 0.5_wp * dy ) / dy
	1188	tower_s = ( hub_y(inot) - 0.5_wp * tower_diameter(inot) - 0.5_wp * dy ) / dy
[1819]	1189
	1190	!
	1191	!-- Determine the fraction of the grid box area overlapping with the tower
[1864]	1192	!-- area and multiply it with the drag of the tower:
[1839]	1193	IF ( ( nxlg <= i ) .AND. ( nxrg >= i ) ) THEN
[1819]	1194
	1195	DO j = nys, nyn
	1196	!
[1839]	1197	!-- Loop from south to north boundary of tower
	1198	IF ( ( j >= tower_s ) .AND. ( j <= tower_n ) ) THEN
	1199
[1819]	1200	DO k = nzb, nzt
	1201
	1202	IF ( k == k_hub(inot) ) THEN
	1203	IF ( tower_n - tower_s >= 1 ) THEN
[1839]	1204	!
[1819]	1205	!-- leftmost and rightmost grid box:
	1206	IF ( j == tower_s ) THEN
[4447]	1207	tow_cd_surf(k,j,i) = ( hub_z(inot) - &
[3065]	1208	( k_hub(inot) * dz(1) - 0.5_wp * dz(1) ) )*& ! extension in z-direction
[1912]	1209	( ( tower_s + 1.0_wp + 0.5_wp ) * dy - &
[4447]	1210	( hub_y(inot) - 0.5_wp * tower_diameter(inot) ) ) * & ! extension in y-direction
	1211	tower_cd(inot)
[1819]	1212	ELSEIF ( j == tower_n ) THEN
[4447]	1213	tow_cd_surf(k,j,i) = ( hub_z(inot) - &
[3065]	1214	( k_hub(inot) * dz(1) - 0.5_wp * dz(1) ) )*& ! extension in z-direction
[4447]	1215	( ( hub_y(inot) + 0.5_wp * tower_diameter(inot) ) - &
[1912]	1216	( tower_n + 0.5_wp ) * dy ) * & ! extension in y-direction
[4447]	1217	tower_cd(inot)
[1819]	1218	!
	1219	!-- grid boxes inbetween
[1912]	1220	!-- (where tow_cd_surf = grid box area):
[1819]	1221	ELSE
[4447]	1222	tow_cd_surf(k,j,i) = ( hub_z(inot) - &
[3065]	1223	( k_hub(inot) * dz(1) - 0.5_wp * dz(1) ) )*&
[4447]	1224	dy * tower_cd(inot)
[1819]	1225	ENDIF
	1226	!
	1227	!-- tower lies completely within one grid box:
	1228	ELSE
[4447]	1229	tow_cd_surf(k,j,i) = ( hub_z(inot) - ( k_hub(inot) * &
[3065]	1230	dz(1) - 0.5_wp * dz(1) ) ) * &
[4447]	1231	tower_diameter(inot) * tower_cd(inot)
[1819]	1232	ENDIF
[1839]	1233	!
	1234	!-- In case that k is smaller than k_hub the following actions
	1235	!-- are carried out:
[1819]	1236	ELSEIF ( k < k_hub(inot) ) THEN
	1237
[1839]	1238	IF ( ( tower_n - tower_s ) >= 1 ) THEN
	1239	!
[1819]	1240	!-- leftmost and rightmost grid box:
	1241	IF ( j == tower_s ) THEN
[3065]	1242	tow_cd_surf(k,j,i) = dz(1) * ( &
[1839]	1243	( tower_s + 1 + 0.5_wp ) * dy - &
[4447]	1244	( hub_y(inot) - 0.5_wp * tower_diameter(inot) ) &
	1245	) * tower_cd(inot)
[1819]	1246	ELSEIF ( j == tower_n ) THEN
[3065]	1247	tow_cd_surf(k,j,i) = dz(1) * ( &
[4447]	1248	( hub_y(inot) + 0.5_wp * tower_diameter(inot) ) - &
[1839]	1249	( tower_n + 0.5_wp ) * dy &
[4447]	1250	) * tower_cd(inot)
[1839]	1251	!
	1252	!-- grid boxes inbetween
[1912]	1253	!-- (where tow_cd_surf = grid box area):
[1819]	1254	ELSE
[3065]	1255	tow_cd_surf(k,j,i) = dz(1) * dy * &
[4447]	1256	tower_cd(inot)
[1819]	1257	ENDIF
[1839]	1258	!
[1819]	1259	!-- tower lies completely within one grid box:
	1260	ELSE
[4447]	1261	tow_cd_surf(k,j,i) = dz(1) * tower_diameter(inot) * &
	1262	tower_cd(inot)
[1839]	1263	ENDIF ! end if larger than grid box
	1264
	1265	ENDIF ! end if k == k_hub
	1266
	1267	ENDDO ! end loop over k
	1268
	1269	ENDIF ! end if inside north and south boundary of tower
	1270
	1271	ENDDO ! end loop over j
	1272
	1273	ENDIF ! end if hub inside domain + ghostpoints
[1819]	1274
[1839]	1275
[1912]	1276	CALL exchange_horiz( tow_cd_surf, nbgp )
[1819]	1277
[1839]	1278	!
[1864]	1279	!-- Calculation of the nacelle area
	1280	!-- CAUTION: Currently disabled due to segmentation faults on the FLOW HPC
	1281	!-- cluster (Oldenburg)
	1282	!!
	1283	!!-- Tabulate the points on the circle that are required in the following for
	1284	!!-- the calculation of the Riemann integral (node points; they are called
	1285	!!-- circle_points in the following):
	1286	!
	1287	! dy_int = dy / 10000.0_wp
	1288	!
	1289	! DO i_ip = 1, upper_end
	1290	! yvalue = dy_int * ( i_ip - 0.5_wp ) + 0.5_wp * dy !<--- segmentation fault
[4447]	1291	! sqrt_arg = nacelle_radius(inot)2 - ( yvalue - hub_y(inot) )2 !<--- segmentation fault
[1864]	1292	! IF ( sqrt_arg >= 0.0_wp ) THEN
	1293	!!
	1294	!!-- bottom intersection point
[4447]	1295	! circle_points(1,i_ip) = hub_z(inot) - SQRT( sqrt_arg )
[1864]	1296	!!
	1297	!!-- top intersection point
[4447]	1298	! circle_points(2,i_ip) = hub_z(inot) + SQRT( sqrt_arg ) !<--- segmentation fault
[1864]	1299	! ELSE
	1300	! circle_points(:,i_ip) = -111111 !<--- segmentation fault
	1301	! ENDIF
	1302	! ENDDO
	1303	!
	1304	!
	1305	! DO j = nys, nyn
	1306	!!
	1307	!!-- In case that the grid box is located completely outside the nacelle
	1308	!!-- (y) it can automatically be stated that there is no overlap between
	1309	!!-- the grid box and the nacelle and consequently we can set
[1912]	1310	!!-- nac_cd_surf(:,j,i) = 0.0:
[1864]	1311	! IF ( ( j >= index_nacl(inot) ) .AND. ( j <= index_nacr(inot) ) ) THEN
	1312	! DO k = nzb+1, nzt
	1313	!!
	1314	!!-- In case that the grid box is located completely outside the
	1315	!!-- nacelle (z) it can automatically be stated that there is no
	1316	!!-- overlap between the grid box and the nacelle and consequently
[1912]	1317	!!-- we can set nac_cd_surf(k,j,i) = 0.0:
[1864]	1318	! IF ( ( k >= index_nacb(inot) ) .OR. &
	1319	! ( k <= index_nact(inot) ) ) THEN
	1320	!!
	1321	!!-- For all other cases Riemann integrals are calculated.
	1322	!!-- Here, the points on the circle that have been determined
	1323	!!-- above are used in order to calculate the overlap between the
	1324	!!-- gridbox and the nacelle area (area approached by 10000
	1325	!!-- rectangulars dz_int * dy_int):
	1326	! DO i_ipg = 1, 10000
	1327	! dz_int = dz
	1328	! i_ip = j * 10000 + i_ipg
	1329	!!
	1330	!!-- Determine the vertical extension dz_int of the circle
	1331	!!-- within the current grid box:
	1332	! IF ( ( circle_points(2,i_ip) < zw(k) ) .AND. & !<--- segmentation fault
	1333	! ( circle_points(2,i_ip) >= zw(k-1) ) ) THEN
	1334	! dz_int = dz_int - & !<--- segmentation fault
	1335	! ( zw(k) - circle_points(2,i_ip) )
	1336	! ENDIF
	1337	! IF ( ( circle_points(1,i_ip) <= zw(k) ) .AND. & !<--- segmentation fault
	1338	! ( circle_points(1,i_ip) > zw(k-1) ) ) THEN
	1339	! dz_int = dz_int - &
	1340	! ( circle_points(1,i_ip) - zw(k-1) )
	1341	! ENDIF
	1342	! IF ( zw(k-1) > circle_points(2,i_ip) ) THEN
	1343	! dz_int = 0.0_wp
	1344	! ENDIF
	1345	! IF ( zw(k) < circle_points(1,i_ip) ) THEN
	1346	! dz_int = 0.0_wp
	1347	! ENDIF
	1348	! IF ( ( nxlg <= i ) .AND. ( nxrg >= i ) ) THEN
[1912]	1349	! nac_cd_surf(k,j,i) = nac_cd_surf(k,j,i) + & !<--- segmentation fault
[4447]	1350	! dy_int * dz_int * nacelle_cd(inot)
[1864]	1351	! ENDIF
	1352	! ENDDO
	1353	! ENDIF
	1354	! ENDDO
	1355	! ENDIF
[1819]	1356	!
[1864]	1357	! ENDDO
[1819]	1358	!
[1912]	1359	! CALL exchange_horiz( nac_cd_surf, nbgp ) !<--- segmentation fault
[1819]	1360
[1864]	1361	ENDDO ! end of loop over turbines
[1819]	1362
[3065]	1363	tow_cd_surf = tow_cd_surf / ( dx * dy * dz(1) ) ! Normalize tower drag
	1364	nac_cd_surf = nac_cd_surf / ( dx * dy * dz(1) ) ! Normalize nacelle drag
[1819]	1365
[1912]	1366	CALL wtm_read_blade_tables
[3685]	1367
[3885]	1368	IF ( debug_output ) CALL debug_message( 'wtm_init', 'end' )
[1839]	1369
[1864]	1370	END SUBROUTINE wtm_init
	1371
	1372
[4411]	1373
[4423]	1374	SUBROUTINE wtm_init_output
[4411]	1375
	1376
[4426]	1377	! INTEGER(iwp) :: ntimesteps !< number of timesteps defined in NetCDF output file
	1378	! INTEGER(iwp) :: ntimesteps_max = 80000 !< number of maximum timesteps defined in NetCDF output file
[4423]	1379	INTEGER(iwp) :: return_value !< returned status value of called function
	1380
	1381	INTEGER(iwp) :: n !< running index
[4411]	1382
[4423]	1383	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ndim !< dummy to write dimension
[4411]	1384
	1385
	1386	!
[4423]	1387	!-- Create NetCDF output file
	1388	nc_filename = 'DATA_1D_TS_WTM_NETCDF' // TRIM( coupling_char )
	1389	return_value = dom_def_file( nc_filename, 'netcdf4-serial' )
[4411]	1390
[4423]	1391	IF ( myid == 0 ) THEN
[4411]	1392	!
	1393	!-- Define dimensions in output file
[4447]	1394	ALLOCATE( ndim(1:n_turbines) )
	1395	DO n = 1, n_turbines
[4411]	1396	ndim(n) = n
	1397	ENDDO
	1398	return_value = dom_def_dim( nc_filename, &
	1399	dimension_name = 'turbine', &
	1400	output_type = 'int32', &
[4447]	1401	bounds = (/1_iwp, n_turbines/), &
[4411]	1402	values_int32 = ndim )
	1403	DEALLOCATE( ndim )
	1404
	1405	!
	1406	!-- time
	1407	return_value = dom_def_dim( nc_filename, &
[4426]	1408	dimension_name = 'time', &
	1409	output_type = 'real32', &
	1410	bounds = (/1_iwp/), &
	1411	values_realwp = (/0.0_wp/) )
[4411]	1412
	1413	!
	1414	!-- x
	1415	variable_name = 'x'
	1416	return_value = dom_def_var( nc_filename, &
	1417	variable_name = variable_name, &
	1418	dimension_names = (/'turbine'/), &
	1419	output_type = 'real32' )
	1420	!
	1421	!-- y
	1422	variable_name = 'y'
	1423	return_value = dom_def_var( nc_filename, &
	1424	variable_name = variable_name, &
	1425	dimension_names = (/'turbine'/), &
	1426	output_type = 'real32' )
	1427
	1428	variable_name = 'z'
	1429	return_value = dom_def_var( nc_filename, &
	1430	variable_name = variable_name, &
	1431	dimension_names = (/'turbine'/), &
	1432	output_type = 'real32' )
	1433
	1434
	1435	return_value = dom_def_att( nc_filename, &
	1436	variable_name = 'time', &
	1437	attribute_name = 'units', &
	1438	value = 'seconds since ' // origin_date_time )
	1439
	1440	return_value = dom_def_att( nc_filename, &
	1441	variable_name = 'x', &
	1442	attribute_name = 'units', &
	1443	value = 'm' )
	1444
	1445	return_value = dom_def_att( nc_filename, &
	1446	variable_name = 'y', &
	1447	attribute_name = 'units', &
	1448	value = 'm' )
	1449
	1450	return_value = dom_def_att( nc_filename, &
	1451	variable_name = 'z', &
	1452	attribute_name = 'units', &
	1453	value = 'm' )
	1454
	1455	return_value = dom_def_att( nc_filename, &
	1456	variable_name = 'x', &
	1457	attribute_name = 'long_name', &
	1458	value = 'x location of rotor center' )
	1459
	1460	return_value = dom_def_att( nc_filename, &
	1461	variable_name = 'y', &
	1462	attribute_name = 'long_name', &
	1463	value = 'y location of rotor center' )
	1464
	1465	return_value = dom_def_att( nc_filename, &
	1466	variable_name = 'z', &
	1467	attribute_name = 'long_name', &
	1468	value = 'z location of rotor center' )
	1469
	1470
	1471	return_value = dom_def_att( nc_filename, &
	1472	variable_name = 'turbine_name', &
	1473	attribute_name = 'long_name', &
	1474	value = 'turbine name')
	1475
	1476	return_value = dom_def_att( nc_filename, &
	1477	variable_name = 'time', &
	1478	attribute_name = 'standard_name', &
	1479	value = 'time')
	1480
	1481	return_value = dom_def_att( nc_filename, &
	1482	variable_name = 'time', &
	1483	attribute_name = 'axis', &
	1484	value = 'T')
	1485
	1486	return_value = dom_def_att( nc_filename, &
	1487	variable_name = 'x', &
	1488	attribute_name = 'axis', &
	1489	value = 'X' )
	1490
	1491	return_value = dom_def_att( nc_filename, &
	1492	variable_name = 'y', &
	1493	attribute_name = 'axis', &
	1494	value = 'Y' )
	1495
	1496
	1497	variable_name = 'rotor_speed'
	1498	return_value = dom_def_var( nc_filename, &
	1499	variable_name = variable_name, &
[4412]	1500	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1501	output_type = 'real32' )
	1502
	1503	return_value = dom_def_att( nc_filename, &
	1504	variable_name = variable_name, &
	1505	attribute_name = 'units', &
	1506	value = 'rad/s' )
	1507
	1508	variable_name = 'generator_speed'
	1509	return_value = dom_def_var( nc_filename, &
	1510	variable_name = variable_name, &
[4412]	1511	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1512	output_type = 'real32' )
	1513
	1514	return_value = dom_def_att( nc_filename, &
	1515	variable_name = variable_name, &
	1516	attribute_name = 'units', &
	1517	value = 'rad/s' )
	1518
	1519
	1520	variable_name = 'generator_torque'
	1521	return_value = dom_def_var( nc_filename, &
	1522	variable_name = variable_name, &
[4412]	1523	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1524	output_type = 'real32' )
	1525
	1526	return_value = dom_def_att( nc_filename, &
	1527	variable_name = variable_name, &
	1528	attribute_name = 'units', &
	1529	value = 'Nm' )
	1530
	1531	variable_name = 'rotor_torque'
	1532	return_value = dom_def_var( nc_filename, &
	1533	variable_name = variable_name, &
[4412]	1534	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1535	output_type = 'real32' )
	1536
	1537	return_value = dom_def_att( nc_filename, &
	1538	variable_name = variable_name, &
	1539	attribute_name = 'units', &
	1540	value = 'Nm' )
	1541
	1542	variable_name = 'pitch_angle'
	1543	return_value = dom_def_var( nc_filename, &
	1544	variable_name = variable_name, &
[4412]	1545	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1546	output_type = 'real32' )
	1547
	1548	return_value = dom_def_att( nc_filename, &
	1549	variable_name = variable_name, &
	1550	attribute_name = 'units', &
	1551	value = 'degrees' )
	1552
	1553	variable_name = 'generator_power'
	1554	return_value = dom_def_var( nc_filename, &
	1555	variable_name = variable_name, &
[4412]	1556	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1557	output_type = 'real32' )
	1558
	1559	return_value = dom_def_att( nc_filename, &
	1560	variable_name = variable_name, &
	1561	attribute_name = 'units', &
	1562	value = 'W' )
	1563
	1564	variable_name = 'rotor_power'
	1565	return_value = dom_def_var( nc_filename, &
	1566	variable_name = variable_name, &
[4412]	1567	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1568	output_type = 'real32' )
	1569
	1570	return_value = dom_def_att( nc_filename, &
	1571	variable_name = variable_name, &
	1572	attribute_name = 'units', &
	1573	value = 'W' )
	1574
	1575	variable_name = 'rotor_thrust'
	1576	return_value = dom_def_var( nc_filename, &
	1577	variable_name = variable_name, &
[4412]	1578	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1579	output_type = 'real32' )
	1580
	1581	return_value = dom_def_att( nc_filename, &
	1582	variable_name = variable_name, &
	1583	attribute_name = 'units', &
	1584	value = 'N' )
	1585
	1586
	1587	variable_name = 'wind_direction'
	1588	return_value = dom_def_var( nc_filename, &
	1589	variable_name = variable_name, &
[4412]	1590	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1591	output_type = 'real32' )
	1592
	1593	return_value = dom_def_att( nc_filename, &
	1594	variable_name = variable_name, &
	1595	attribute_name = 'units', &
	1596	value = 'degrees' )
	1597
	1598	variable_name = 'yaw_angle'
	1599	return_value = dom_def_var( nc_filename, &
	1600	variable_name = variable_name, &
[4412]	1601	dimension_names = (/ 'turbine', 'time ' /), &
[4411]	1602	output_type = 'real32' )
	1603
	1604	return_value = dom_def_att( nc_filename, &
	1605	variable_name = variable_name, &
	1606	attribute_name = 'units', &
	1607	value = 'degrees' )
[4423]	1608
	1609	ENDIF
	1610	END SUBROUTINE
[4411]	1611
[1819]	1612	!------------------------------------------------------------------------------!
[1864]	1613	! Description:
	1614	! ------------
	1615	!> Read in layout of the rotor blade , the lift and drag tables
	1616	!> and the distribution of lift and drag tables along the blade
[1819]	1617	!------------------------------------------------------------------------------!
[1912]	1618	!
	1619	SUBROUTINE wtm_read_blade_tables
[1819]	1620
[1839]	1621
[1864]	1622	IMPLICIT NONE
	1623
	1624	INTEGER(iwp) :: ii !< running index
	1625	INTEGER(iwp) :: jj !< running index
[1843]	1626
[1864]	1627	INTEGER(iwp) :: ierrn !<
	1628
	1629	CHARACTER(200) :: chmess !< Read in string
[1839]	1630
[1864]	1631	INTEGER(iwp) :: dlen !< no. rows of local table
	1632	INTEGER(iwp) :: dlenbl !< no. rows of cd, cl table
	1633	INTEGER(iwp) :: ialpha !< table position of current alpha value
	1634	INTEGER(iwp) :: iialpha !<
	1635	INTEGER(iwp) :: iir !<
	1636	INTEGER(iwp) :: radres !< radial resolution
	1637	INTEGER(iwp) :: t1 !< no. of airfoil
	1638	INTEGER(iwp) :: t2 !< no. of airfoil
	1639	INTEGER(iwp) :: trow !<
	1640	INTEGER(iwp) :: dlenbl_int !< no. rows of interpolated cd, cl tables
[1839]	1641
[1864]	1642	REAL(wp) :: alpha_attack_i !<
	1643	REAL(wp) :: weight_a !<
	1644	REAL(wp) :: weight_b !<
[1839]	1645
[1864]	1646	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ttoint1 !<
	1647	INTEGER(iwp), DIMENSION(:), ALLOCATABLE :: ttoint2 !<
[1839]	1648
[1864]	1649	REAL(wp), DIMENSION(:), ALLOCATABLE :: turb_cd_sel1 !<
	1650	REAL(wp), DIMENSION(:), ALLOCATABLE :: turb_cd_sel2 !<
	1651	REAL(wp), DIMENSION(:), ALLOCATABLE :: turb_cl_sel1 !<
	1652	REAL(wp), DIMENSION(:), ALLOCATABLE :: turb_cl_sel2 !<
	1653	REAL(wp), DIMENSION(:), ALLOCATABLE :: read_cl_cd !< read in var array
[1839]	1654
[1864]	1655	REAL(wp), DIMENSION(:), ALLOCATABLE :: alpha_attack_tab !<
	1656	REAL(wp), DIMENSION(:), ALLOCATABLE :: trad1 !<
	1657	REAL(wp), DIMENSION(:), ALLOCATABLE :: trad2 !<
	1658	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: turb_cd_table !<
	1659	REAL(wp), DIMENSION(:,:), ALLOCATABLE :: turb_cl_table !<
[1839]	1660
[4447]	1661	ALLOCATE ( read_cl_cd(1:2*n_airfoils+1) )
[1839]	1662
[1864]	1663	!
	1664	!-- Read in the distribution of lift and drag tables along the blade, the
	1665	!-- layout of the rotor blade and the lift and drag tables:
	1666
[2323]	1667	OPEN ( 90, FILE='WTM_DATA', STATUS='OLD', FORM='FORMATTED', IOSTAT=ierrn )
[1864]	1668
	1669	IF ( ierrn /= 0 ) THEN
	1670	message_string = 'file WTM_DATA does not exist'
[2322]	1671	CALL message( 'wtm_init', 'PA0464', 1, 2, 0, 6, 0 )
[1864]	1672	ENDIF
	1673	!
	1674	!-- Read distribution table:
	1675
	1676	dlen = 0
	1677
[2323]	1678	READ ( 90, '(3/)' )
[1864]	1679
	1680	rloop3: DO
[2323]	1681	READ ( 90, *, IOSTAT=ierrn ) chmess
[1864]	1682	IF ( ierrn < 0 .OR. chmess == '#' .OR. chmess == '') EXIT rloop3
	1683	dlen = dlen + 1
	1684	ENDDO rloop3
	1685
	1686	ALLOCATE( trad1(1:dlen), trad2(1:dlen), ttoint1(1:dlen), ttoint2(1:dlen))
	1687
	1688	DO jj = 1,dlen+1
[2323]	1689	BACKSPACE ( 90, IOSTAT=ierrn )
[1864]	1690	ENDDO
	1691
	1692	DO jj = 1,dlen
[2323]	1693	READ ( 90, * ) trad1(jj), trad2(jj), ttoint1(jj), ttoint2(jj)
[1864]	1694	ENDDO
	1695
	1696	!
	1697	!-- Read layout table:
	1698
[1839]	1699	dlen = 0
[1864]	1700
[2323]	1701	READ ( 90, '(3/)')
[1864]	1702
[1843]	1703	rloop1: DO
[2323]	1704	READ ( 90, *, IOSTAT=ierrn ) chmess
[1864]	1705	IF ( ierrn < 0 .OR. chmess == '#' .OR. chmess == '') EXIT rloop1
	1706	dlen = dlen + 1
[1843]	1707	ENDDO rloop1
[1864]	1708
[1839]	1709	ALLOCATE( lrd(1:dlen), ard(1:dlen), crd(1:dlen) )
[1864]	1710	DO jj = 1, dlen+1
[2323]	1711	BACKSPACE ( 90, IOSTAT=ierrn )
[1864]	1712	ENDDO
	1713	DO jj = 1, dlen
[2323]	1714	READ ( 90, * ) lrd(jj), ard(jj), crd(jj)
[1839]	1715	ENDDO
[1819]	1716
[1864]	1717	!
	1718	!-- Read tables (turb_cl(alpha),turb_cd(alpha) for the different profiles:
[1819]	1719
[1864]	1720	dlen = 0
	1721
[2323]	1722	READ ( 90, '(3/)' )
[1864]	1723
[1843]	1724	rloop2: DO
[2323]	1725	READ ( 90, *, IOSTAT=ierrn ) chmess
[1864]	1726	IF ( ierrn < 0 .OR. chmess == '#' .OR. chmess == '') EXIT rloop2
	1727	dlen = dlen + 1
	1728	ENDDO rloop2
	1729
[4447]	1730	ALLOCATE( alpha_attack_tab(1:dlen), turb_cl_table(1:dlen,1:n_airfoils), &
	1731	turb_cd_table(1:dlen,1:n_airfoils) )
[1864]	1732
	1733	DO jj = 1,dlen+1
[2323]	1734	BACKSPACE ( 90, IOSTAT=ierrn )
[1864]	1735	ENDDO
	1736
[1839]	1737	DO jj = 1,dlen
[2323]	1738	READ ( 90, * ) read_cl_cd
[1864]	1739	alpha_attack_tab(jj) = read_cl_cd(1)
[4447]	1740	DO ii= 1, n_airfoils
[1864]	1741	turb_cl_table(jj,ii) = read_cl_cd(ii*2)
	1742	turb_cd_table(jj,ii) = read_cl_cd(ii*2+1)
[1819]	1743	ENDDO
[1864]	1744
[1839]	1745	ENDDO
[1864]	1746
	1747	dlenbl = dlen
	1748
[2323]	1749	CLOSE ( 90 )
[1819]	1750
[1864]	1751	!
[4447]	1752	!-- For each possible radial position (resolution: 0.1 m --> 631 values if rotor_radius(1)=63m)
[2836]	1753	!-- and each possible angle of attack (resolution: 0.1 degrees --> 3601 values!)
[1864]	1754	!-- determine the lift and drag coefficient by interpolating between the
	1755	!-- tabulated values of each table (interpolate to current angle of attack)
	1756	!-- and between the tables (interpolate to current radial position):
[1839]	1757
[2836]	1758	ALLOCATE( turb_cl_sel1(1:dlenbl) )
	1759	ALLOCATE( turb_cl_sel2(1:dlenbl) )
	1760	ALLOCATE( turb_cd_sel1(1:dlenbl) )
	1761	ALLOCATE( turb_cd_sel2(1:dlenbl) )
[1819]	1762
[4447]	1763	radres = INT( rotor_radius(1) * 10.0_wp ) + 1_iwp
[1864]	1764	dlenbl_int = INT( 360.0_wp / accu_cl_cd_tab ) + 1_iwp
[1839]	1765
[2836]	1766	ALLOCATE( turb_cl_tab(1:dlenbl_int,1:radres) )
	1767	ALLOCATE( turb_cd_tab(1:dlenbl_int,1:radres) )
[1864]	1768
[2836]	1769	DO iir = 1, radres ! loop over radius
[1864]	1770
[2836]	1771	cur_r = ( iir - 1_iwp ) * 0.1_wp
	1772	!
	1773	!-- Find position in table 1
	1774	lct = MINLOC( ABS( trad1 - cur_r ) )
	1775	! lct(1) = lct(1)
[1864]	1776
[4144]	1777	IF ( ( trad1(lct(1)) - cur_r ) > 0.0 ) THEN
[2836]	1778	lct(1) = lct(1) - 1
	1779	ENDIF
[1864]	1780
[2836]	1781	trow = lct(1)
	1782	!
	1783	!-- Calculate weights for radius interpolation
	1784	weight_a = ( trad2(trow) - cur_r ) / ( trad2(trow) - trad1(trow) )
	1785	weight_b = ( cur_r - trad1(trow) ) / ( trad2(trow) - trad1(trow) )
	1786	t1 = ttoint1(trow)
	1787	t2 = ttoint2(trow)
[1864]	1788
[4144]	1789	IF ( t1 == t2 ) THEN ! if both are the same, the weights are NaN
	1790	weight_a = 0.5_wp ! then do interpolate in between same twice
	1791	weight_b = 0.5_wp ! using 0.5 as weight
[2836]	1792	ENDIF
	1793
	1794	IF ( t1 == 0 .AND. t2 == 0 ) THEN
	1795	turb_cd_sel1 = 0.0_wp
	1796	turb_cd_sel2 = 0.0_wp
	1797	turb_cl_sel1 = 0.0_wp
	1798	turb_cl_sel2 = 0.0_wp
	1799
[3593]	1800	turb_cd_tab(1,iir) = 0.0_wp ! For -180 degrees (iialpha=1) the values
[2836]	1801	turb_cl_tab(1,iir) = 0.0_wp ! for each radius has to be set
	1802	! explicitly
	1803	ELSE
	1804	turb_cd_sel1 = turb_cd_table(:,t1)
	1805	turb_cd_sel2 = turb_cd_table(:,t2)
	1806	turb_cl_sel1 = turb_cl_table(:,t1)
	1807	turb_cl_sel2 = turb_cl_table(:,t2)
	1808	!
[3593]	1809	!-- For -180 degrees (iialpha=1) the values for each radius has to be set
[2836]	1810	!-- explicitly
	1811	turb_cd_tab(1,iir) = ( weight_a * turb_cd_table(1,t1) + weight_b &
	1812	* turb_cd_table(1,t2) )
	1813	turb_cl_tab(1,iir) = ( weight_a * turb_cl_table(1,t1) + weight_b &
	1814	* turb_cl_table(1,t2) )
	1815	ENDIF
	1816
	1817	DO iialpha = 2, dlenbl_int ! loop over angles
	1818
[1864]	1819	alpha_attack_i = -180.0_wp + REAL( iialpha-1 ) * accu_cl_cd_tab
	1820	ialpha = 1
[2836]	1821
[4343]	1822	DO WHILE ( ( alpha_attack_i > alpha_attack_tab(ialpha) ) .AND. (ialpha < dlen ) )
[1864]	1823	ialpha = ialpha + 1
	1824	ENDDO
[1819]	1825
[1864]	1826	!
[1912]	1827	!-- Interpolation of lift and drag coefficiencts on fine grid of radius
	1828	!-- segments and angles of attack
[3182]	1829
[1912]	1830	turb_cl_tab(iialpha,iir) = ( alpha_attack_tab(ialpha) - &
	1831	alpha_attack_i ) / &
[1864]	1832	( alpha_attack_tab(ialpha) - &
	1833	alpha_attack_tab(ialpha-1) ) * &
	1834	( weight_a * turb_cl_sel1(ialpha-1) + &
	1835	weight_b * turb_cl_sel2(ialpha-1) ) +&
	1836	( alpha_attack_i - &
	1837	alpha_attack_tab(ialpha-1) ) / &
	1838	( alpha_attack_tab(ialpha) - &
	1839	alpha_attack_tab(ialpha-1) ) * &
	1840	( weight_a * turb_cl_sel1(ialpha) + &
	1841	weight_b * turb_cl_sel2(ialpha) )
[1912]	1842	turb_cd_tab(iialpha,iir) = ( alpha_attack_tab(ialpha) - &
	1843	alpha_attack_i ) / &
[1864]	1844	( alpha_attack_tab(ialpha) - &
	1845	alpha_attack_tab(ialpha-1) ) * &
	1846	( weight_a * turb_cd_sel1(ialpha-1) + &
	1847	weight_b * turb_cd_sel2(ialpha-1) ) +&
	1848	( alpha_attack_i - &
	1849	alpha_attack_tab(ialpha-1) ) / &
	1850	( alpha_attack_tab(ialpha) - &
	1851	alpha_attack_tab(ialpha-1) ) * &
	1852	( weight_a * turb_cd_sel1(ialpha) + &
	1853	weight_b * turb_cd_sel2(ialpha) )
[2836]	1854
[1912]	1855	ENDDO ! end loop over angles of attack
[2836]	1856
	1857	ENDDO ! end loop over radius
[1819]	1858
[2836]	1859
[1912]	1860	END SUBROUTINE wtm_read_blade_tables
[1819]	1861
	1862
[1864]	1863	!------------------------------------------------------------------------------!
	1864	! Description:
	1865	! ------------
	1866	!> The projection matrix for the coordinate system of therotor disc in respect
	1867	!> to the yaw and tilt angle of the rotor is calculated
	1868	!------------------------------------------------------------------------------!
	1869	SUBROUTINE wtm_rotate_rotor( inot )
[1819]	1870
[1864]	1871
	1872	IMPLICIT NONE
	1873
	1874	INTEGER(iwp) :: inot
	1875	!
	1876	!-- Calculation of the rotation matrix for the application of the tilt to
	1877	!-- the rotors
[4447]	1878	rot_eigen_rad(1) = SIN( yaw_angle(inot) ) ! x-component of the radial eigenvector
	1879	rot_eigen_rad(2) = COS( yaw_angle(inot) ) ! y-component of the radial eigenvector
[1864]	1880	rot_eigen_rad(3) = 0.0_wp ! z-component of the radial eigenvector
	1881
	1882	rot_eigen_azi(1) = 0.0_wp ! x-component of the azimuth eigenvector
	1883	rot_eigen_azi(2) = 0.0_wp ! y-component of the azimuth eigenvector
	1884	rot_eigen_azi(3) = 1.0_wp ! z-component of the azimuth eigenvector
	1885
[4447]	1886	rot_eigen_nor(1) = COS( yaw_angle(inot) ) ! x-component of the normal eigenvector
	1887	rot_eigen_nor(2) = -SIN( yaw_angle(inot) ) ! y-component of the normal eigenvector
[1864]	1888	rot_eigen_nor(3) = 0.0_wp ! z-component of the normal eigenvector
[1839]	1889
[1864]	1890	!
	1891	!-- Calculation of the coordinate transformation matrix to apply a tilt to
	1892	!-- the rotor. If tilt = 0, rot_coord_trans is a unit matrix.
[1819]	1893
[1912]	1894	rot_coord_trans(inot,1,1) = rot_eigen_rad(1)*2 &
[4447]	1895	( 1.0_wp - COS( tilt_angle ) ) + COS( tilt_angle )
[1912]	1896	rot_coord_trans(inot,1,2) = rot_eigen_rad(1) * rot_eigen_rad(2) * &
[4447]	1897	( 1.0_wp - COS( tilt_angle ) ) - &
	1898	rot_eigen_rad(3) * SIN( tilt_angle )
[1912]	1899	rot_coord_trans(inot,1,3) = rot_eigen_rad(1) * rot_eigen_rad(3) * &
[4447]	1900	( 1.0_wp - COS( tilt_angle ) ) + &
	1901	rot_eigen_rad(2) * SIN( tilt_angle )
[1912]	1902	rot_coord_trans(inot,2,1) = rot_eigen_rad(2) * rot_eigen_rad(1) * &
[4447]	1903	( 1.0_wp - COS( tilt_angle ) ) + &
	1904	rot_eigen_rad(3) * SIN( tilt_angle )
[1912]	1905	rot_coord_trans(inot,2,2) = rot_eigen_rad(2)*2 &
[4447]	1906	( 1.0_wp - COS( tilt_angle ) ) + COS( tilt_angle )
[1912]	1907	rot_coord_trans(inot,2,3) = rot_eigen_rad(2) * rot_eigen_rad(3) * &
[4447]	1908	( 1.0_wp - COS( tilt_angle ) ) - &
	1909	rot_eigen_rad(1) * SIN( tilt_angle )
[1912]	1910	rot_coord_trans(inot,3,1) = rot_eigen_rad(3) * rot_eigen_rad(1) * &
[4447]	1911	( 1.0_wp - COS( tilt_angle ) ) - &
	1912	rot_eigen_rad(2) * SIN( tilt_angle )
[1912]	1913	rot_coord_trans(inot,3,2) = rot_eigen_rad(3) * rot_eigen_rad(2) * &
[4447]	1914	( 1.0_wp - COS( tilt_angle ) ) + &
	1915	rot_eigen_rad(1) * SIN( tilt_angle )
[1912]	1916	rot_coord_trans(inot,3,3) = rot_eigen_rad(3)*2 &
[4447]	1917	( 1.0_wp - COS( tilt_angle ) ) + COS( tilt_angle )
[1839]	1918
[1864]	1919	!
	1920	!-- Vectors for the Transformation of forces from the rotor's spheric
	1921	!-- coordinate system to the cartesian coordinate system
	1922	rotx(inot,:) = MATMUL( rot_coord_trans(inot,:,:), rot_eigen_nor )
	1923	roty(inot,:) = MATMUL( rot_coord_trans(inot,:,:), rot_eigen_rad )
	1924	rotz(inot,:) = MATMUL( rot_coord_trans(inot,:,:), rot_eigen_azi )
	1925
	1926	END SUBROUTINE wtm_rotate_rotor
[1839]	1927
	1928
[1819]	1929	!------------------------------------------------------------------------------!
	1930	! Description:
	1931	! ------------
[1839]	1932	!> Calculation of the forces generated by the wind turbine
[1819]	1933	!------------------------------------------------------------------------------!
	1934	SUBROUTINE wtm_forces
	1935
[1864]	1936
[1819]	1937	IMPLICIT NONE
	1938
[2669]	1939	CHARACTER (LEN=4) :: turbine_id
[1819]	1940
[1839]	1941	INTEGER(iwp) :: i, j, k !< loop indices
	1942	INTEGER(iwp) :: inot !< turbine loop index (turbine id)
	1943	INTEGER(iwp) :: iialpha, iir !<
[3241]	1944	INTEGER(iwp) :: rseg !<
	1945	INTEGER(iwp) :: ring !<
[1839]	1946	INTEGER(iwp) :: ii, jj, kk !<
[4411]	1947
[2232]	1948	REAL(wp) :: flag !< flag to mask topography grid points
[1839]	1949	REAL(wp) :: sin_rot, cos_rot !<
	1950	REAL(wp) :: sin_yaw, cos_yaw !<
[1912]	1951
	1952	REAL(wp) :: aa, bb, cc, dd !< interpolation distances
	1953	REAL(wp) :: gg !< interpolation volume var
	1954
	1955	REAL(wp) :: dist_u_3d, dist_v_3d, dist_w_3d !< smearing distances
[4411]	1956
[1912]	1957
[1839]	1958	!
[1819]	1959	! Variables for pitch control
[3241]	1960	LOGICAL :: pitch_sw = .FALSE.
[1839]	1961
[3241]	1962	INTEGER(iwp), DIMENSION(1) :: lct = 0
	1963	REAL(wp), DIMENSION(1) :: rad_d = 0.0_wp
[2152]	1964
	1965	REAL(wp) :: tl_factor !< factor for tip loss correction
[1819]	1966
	1967
[1864]	1968	CALL cpu_log( log_point_s(61), 'wtm_forces', 'start' )
[1819]	1969
	1970
[4411]	1971	IF ( time_since_reference_point >= time_turbine_on ) THEN
[1819]	1972
[1864]	1973	!
[1819]	1974	!-- Set forces to zero for each new time step:
	1975	thrust(:,:,:) = 0.0_wp
	1976	torque_y(:,:,:) = 0.0_wp
	1977	torque_z(:,:,:) = 0.0_wp
	1978	torque_total(:) = 0.0_wp
[1912]	1979	rot_tend_x(:,:,:) = 0.0_wp
	1980	rot_tend_y(:,:,:) = 0.0_wp
	1981	rot_tend_z(:,:,:) = 0.0_wp
	1982	thrust_rotor(:) = 0.0_wp
[1819]	1983	!
	1984	!-- Loop over number of turbines:
[4447]	1985	DO inot = 1, n_turbines
[1819]	1986
[4447]	1987	cos_yaw = COS(yaw_angle(inot))
	1988	sin_yaw = SIN(yaw_angle(inot))
[1819]	1989	!
[1839]	1990	!-- Loop over rings of each turbine:
[3832]	1991
	1992	!$OMP PARALLEL PRIVATE (ring, rseg, thrust_seg, torque_seg_y, torque_seg_z, sin_rot, &
	1993	!$OMP& cos_rot, re, rbx, rby, rbz, ii, jj, kk, aa, bb, cc, dd, gg)
	1994	!$OMP DO
[1819]	1995	DO ring = 1, nrings(inot)
	1996
	1997	thrust_seg(:) = 0.0_wp
	1998	torque_seg_y(:) = 0.0_wp
	1999	torque_seg_z(:) = 0.0_wp
	2000	!
	2001	!-- Determine distance between each ring (center) and the hub:
	2002	cur_r = (ring - 0.5_wp) * delta_r(inot)
	2003
	2004	!
[1839]	2005	!-- Loop over segments of each ring of each turbine:
[1819]	2006	DO rseg = 1, nsegs(ring,inot)
	2007	!
[1864]	2008	!-- !-----------------------------------------------------------!
	2009	!-- !-- Determine coordinates of the ring segments --!
	2010	!-- !-----------------------------------------------------------!
[1819]	2011	!
[1864]	2012	!-- Determine angle of ring segment towards zero degree angle of
	2013	!-- rotor system (at zero degree rotor direction vectors aligned
	2014	!-- with y-axis):
[1819]	2015	phi_rotor = rseg * 2.0_wp * pi / nsegs(ring,inot)
	2016	cos_rot = COS( phi_rotor )
	2017	sin_rot = SIN( phi_rotor )
	2018
[1864]	2019	!-- Now the direction vectors can be determined with respect to
	2020	!-- the yaw and tilt angle:
[1819]	2021	re(1) = cos_rot * sin_yaw
[1839]	2022	re(2) = cos_rot * cos_yaw
[1819]	2023	re(3) = sin_rot
	2024
	2025	rote = MATMUL( rot_coord_trans(inot,:,:), re )
	2026	!
	2027	!-- Coordinates of the single segments (center points):
[4447]	2028	rbx(ring,rseg) = hub_x(inot) + cur_r * rote(1)
	2029	rby(ring,rseg) = hub_y(inot) + cur_r * rote(2)
	2030	rbz(ring,rseg) = hub_z(inot) + cur_r * rote(3)
[1819]	2031
[1864]	2032	!-- !-----------------------------------------------------------!
	2033	!-- !-- Interpolation of the velocity components from the --!
	2034	!-- !-- cartesian grid point to the coordinates of each ring --!
	2035	!-- !-- segment (follows a method used in the particle model) --!
	2036	!-- !-----------------------------------------------------------!
[1819]	2037
	2038	u_int(inot,ring,rseg) = 0.0_wp
	2039	u_int_1_l(inot,ring,rseg) = 0.0_wp
	2040
	2041	v_int(inot,ring,rseg) = 0.0_wp
	2042	v_int_1_l(inot,ring,rseg) = 0.0_wp
	2043
	2044	w_int(inot,ring,rseg) = 0.0_wp
	2045	w_int_1_l(inot,ring,rseg) = 0.0_wp
	2046
	2047	!
	2048	!-- Interpolation of the u-component:
	2049
	2050	ii = rbx(ring,rseg) * ddx
	2051	jj = ( rby(ring,rseg) - 0.5_wp * dy ) * ddy
[3065]	2052	kk = ( rbz(ring,rseg) + 0.5_wp * dz(1) ) / dz(1)
[1819]	2053	!
[1864]	2054	!-- Interpolate only if all required information is available on
	2055	!-- the current PE:
[1839]	2056	IF ( ( ii >= nxl ) .AND. ( ii <= nxr ) ) THEN
	2057	IF ( ( jj >= nys ) .AND. ( jj <= nyn ) ) THEN
[1819]	2058
[1839]	2059	aa = ( ( ii + 1 ) * dx - rbx(ring,rseg) ) * &
	2060	( ( jj + 1 + 0.5_wp ) * dy - rby(ring,rseg) )
	2061	bb = ( rbx(ring,rseg) - ii * dx ) * &
	2062	( ( jj + 1 + 0.5_wp ) * dy - rby(ring,rseg) )
	2063	cc = ( ( ii+1 ) * dx - rbx(ring,rseg) ) * &
	2064	( rby(ring,rseg) - ( jj + 0.5_wp ) * dy )
	2065	dd = ( rbx(ring,rseg) - ii * dx ) * &
	2066	( rby(ring,rseg) - ( jj + 0.5_wp ) * dy )
[1819]	2067	gg = dx * dy
	2068
[1864]	2069	u_int_l = ( aa * u(kk,jj,ii) + &
	2070	bb * u(kk,jj,ii+1) + &
	2071	cc * u(kk,jj+1,ii) + &
	2072	dd * u(kk,jj+1,ii+1) &
[1819]	2073	) / gg
	2074
[1864]	2075	u_int_u = ( aa * u(kk+1,jj,ii) + &
	2076	bb * u(kk+1,jj,ii+1) + &
	2077	cc * u(kk+1,jj+1,ii) + &
	2078	dd * u(kk+1,jj+1,ii+1) &
[1819]	2079	) / gg
	2080
[1864]	2081	u_int_1_l(inot,ring,rseg) = u_int_l + &
[3065]	2082	( rbz(ring,rseg) - zu(kk) ) / dz(1) * &
[1819]	2083	( u_int_u - u_int_l )
	2084
	2085	ELSE
	2086	u_int_1_l(inot,ring,rseg) = 0.0_wp
	2087	ENDIF
	2088	ELSE
	2089	u_int_1_l(inot,ring,rseg) = 0.0_wp
	2090	ENDIF
	2091
	2092
	2093	!
	2094	!-- Interpolation of the v-component:
	2095	ii = ( rbx(ring,rseg) - 0.5_wp * dx ) * ddx
[1839]	2096	jj = rby(ring,rseg) * ddy
[3065]	2097	kk = ( rbz(ring,rseg) + 0.5_wp * dz(1) ) / dz(1)
[1819]	2098	!
[1864]	2099	!-- Interpolate only if all required information is available on
	2100	!-- the current PE:
[1839]	2101	IF ( ( ii >= nxl ) .AND. ( ii <= nxr ) ) THEN
	2102	IF ( ( jj >= nys ) .AND. ( jj <= nyn ) ) THEN
[1819]	2103
[1839]	2104	aa = ( ( ii + 1 + 0.5_wp ) * dx - rbx(ring,rseg) ) * &
	2105	( ( jj + 1 ) * dy - rby(ring,rseg) )
	2106	bb = ( rbx(ring,rseg) - ( ii + 0.5_wp ) * dx ) * &
	2107	( ( jj + 1 ) * dy - rby(ring,rseg) )
	2108	cc = ( ( ii + 1 + 0.5_wp ) * dx - rbx(ring,rseg) ) * &
	2109	( rby(ring,rseg) - jj * dy )
	2110	dd = ( rbx(ring,rseg) - ( ii + 0.5_wp ) * dx ) * &
	2111	( rby(ring,rseg) - jj * dy )
[1819]	2112	gg = dx * dy
	2113
[1864]	2114	v_int_l = ( aa * v(kk,jj,ii) + &
	2115	bb * v(kk,jj,ii+1) + &
	2116	cc * v(kk,jj+1,ii) + &
	2117	dd * v(kk,jj+1,ii+1) &
[1819]	2118	) / gg
	2119
[1864]	2120	v_int_u = ( aa * v(kk+1,jj,ii) + &
	2121	bb * v(kk+1,jj,ii+1) + &
	2122	cc * v(kk+1,jj+1,ii) + &
	2123	dd * v(kk+1,jj+1,ii+1) &
[1819]	2124	) / gg
	2125
[1864]	2126	v_int_1_l(inot,ring,rseg) = v_int_l + &
[3065]	2127	( rbz(ring,rseg) - zu(kk) ) / dz(1) * &
[1819]	2128	( v_int_u - v_int_l )
	2129
	2130	ELSE
	2131	v_int_1_l(inot,ring,rseg) = 0.0_wp
	2132	ENDIF
	2133	ELSE
	2134	v_int_1_l(inot,ring,rseg) = 0.0_wp
	2135	ENDIF
	2136
	2137
	2138	!
	2139	!-- Interpolation of the w-component:
	2140	ii = ( rbx(ring,rseg) - 0.5_wp * dx ) * ddx
	2141	jj = ( rby(ring,rseg) - 0.5_wp * dy ) * ddy
[3065]	2142	kk = rbz(ring,rseg) / dz(1)
[1819]	2143	!
[1864]	2144	!-- Interpolate only if all required information is available on
	2145	!-- the current PE:
[1839]	2146	IF ( ( ii >= nxl ) .AND. ( ii <= nxr ) ) THEN
	2147	IF ( ( jj >= nys ) .AND. ( jj <= nyn ) ) THEN
[1819]	2148
[1839]	2149	aa = ( ( ii + 1 + 0.5_wp ) * dx - rbx(ring,rseg) ) * &
	2150	( ( jj + 1 + 0.5_wp ) * dy - rby(ring,rseg) )
	2151	bb = ( rbx(ring,rseg) - ( ii + 0.5_wp ) * dx ) * &
	2152	( ( jj + 1 + 0.5_wp ) * dy - rby(ring,rseg) )
	2153	cc = ( ( ii + 1 + 0.5_wp ) * dx - rbx(ring,rseg) ) * &
	2154	( rby(ring,rseg) - ( jj + 0.5_wp ) * dy )
	2155	dd = ( rbx(ring,rseg) - ( ii + 0.5_wp ) * dx ) * &
	2156	( rby(ring,rseg) - ( jj + 0.5_wp ) * dy )
[1819]	2157	gg = dx * dy
	2158
[1864]	2159	w_int_l = ( aa * w(kk,jj,ii) + &
	2160	bb * w(kk,jj,ii+1) + &
	2161	cc * w(kk,jj+1,ii) + &
	2162	dd * w(kk,jj+1,ii+1) &
[1819]	2163	) / gg
	2164
[1864]	2165	w_int_u = ( aa * w(kk+1,jj,ii) + &
	2166	bb * w(kk+1,jj,ii+1) + &
	2167	cc * w(kk+1,jj+1,ii) + &
	2168	dd * w(kk+1,jj+1,ii+1) &
[1819]	2169	) / gg
	2170
[1864]	2171	w_int_1_l(inot,ring,rseg) = w_int_l + &
[3065]	2172	( rbz(ring,rseg) - zw(kk) ) / dz(1) * &
[1819]	2173	( w_int_u - w_int_l )
	2174	ELSE
	2175	w_int_1_l(inot,ring,rseg) = 0.0_wp
	2176	ENDIF
	2177	ELSE
	2178	w_int_1_l(inot,ring,rseg) = 0.0_wp
	2179	ENDIF
	2180
	2181	ENDDO
	2182	ENDDO
[3832]	2183	!$OMP END PARALLEL
[1819]	2184
	2185	ENDDO
	2186
	2187	!
	2188	!-- Exchange between PEs (information required on each PE):
	2189	#if defined( __parallel )
[4447]	2190	CALL MPI_ALLREDUCE( u_int_1_l, u_int, n_turbines * MAXVAL(nrings) * &
[1839]	2191	MAXVAL(nsegs), MPI_REAL, MPI_SUM, comm2d, ierr )
[4447]	2192	CALL MPI_ALLREDUCE( v_int_1_l, v_int, n_turbines * MAXVAL(nrings) * &
[1839]	2193	MAXVAL(nsegs), MPI_REAL, MPI_SUM, comm2d, ierr )
[4447]	2194	CALL MPI_ALLREDUCE( w_int_1_l, w_int, n_turbines * MAXVAL(nrings) * &
[1839]	2195	MAXVAL(nsegs), MPI_REAL, MPI_SUM, comm2d, ierr )
[1819]	2196	#else
	2197	u_int = u_int_1_l
	2198	v_int = v_int_1_l
	2199	w_int = w_int_1_l
	2200	#endif
	2201
	2202
	2203	!
	2204	!-- Loop over number of turbines:
[1912]	2205
[4447]	2206	DO inot = 1, n_turbines
[1912]	2207	pit_loop: DO
[1819]	2208
[1912]	2209	IF ( pitch_sw ) THEN
[1839]	2210	torque_total(inot) = 0.0_wp
[1912]	2211	thrust_rotor(inot) = 0.0_wp
[4447]	2212	pitch_angle(inot) = pitch_angle(inot) + 0.25_wp
	2213	! IF ( myid == 0 ) PRINT*, 'Pitch', inot, pitch_angle(inot)
[1912]	2214	ELSE
[4447]	2215	cos_yaw = COS(yaw_angle(inot))
	2216	sin_yaw = SIN(yaw_angle(inot))
[1912]	2217	IF ( pitch_control ) THEN
[4447]	2218	pitch_angle(inot) = MAX(pitch_angle_old(inot) - pitch_rate * &
[1912]	2219	dt_3d , 0.0_wp )
	2220	ENDIF
[1819]	2221	ENDIF
	2222
[1839]	2223	!
	2224	!-- Loop over rings of each turbine:
[3832]	2225	!$OMP PARALLEL PRIVATE (ring, rseg, sin_rot, cos_rot, re, rea, ren, rote, rota, rotn, &
	2226	!$OMP& vtheta, phi_rel, lct, rad_d, alpha_attack, vrel, &
	2227	!$OMP& chord, iialpha, iir, turb_cl, tl_factor, thrust_seg, &
	2228	!$OMP& torque_seg_y, turb_cd, torque_seg_z, thrust_ring, &
	2229	!$OMP& torque_ring_y, torque_ring_z)
	2230	!$OMP DO
[1819]	2231	DO ring = 1, nrings(inot)
	2232	!
	2233	!-- Determine distance between each ring (center) and the hub:
	2234	cur_r = (ring - 0.5_wp) * delta_r(inot)
[1839]	2235	!
	2236	!-- Loop over segments of each ring of each turbine:
[1819]	2237	DO rseg = 1, nsegs(ring,inot)
	2238	!
[1839]	2239	!-- Determine angle of ring segment towards zero degree angle of
	2240	!-- rotor system (at zero degree rotor direction vectors aligned
	2241	!-- with y-axis):
[1819]	2242	phi_rotor = rseg * 2.0_wp * pi / nsegs(ring,inot)
	2243	cos_rot = COS(phi_rotor)
	2244	sin_rot = SIN(phi_rotor)
	2245	!
[1839]	2246	!-- Now the direction vectors can be determined with respect to
	2247	!-- the yaw and tilt angle:
[1819]	2248	re(1) = cos_rot * sin_yaw
	2249	re(2) = cos_rot * cos_yaw
	2250	re(3) = sin_rot
	2251
[1864]	2252	! The current unit vector in azimuthal direction:
[1819]	2253	rea(1) = - sin_rot * sin_yaw
	2254	rea(2) = - sin_rot * cos_yaw
	2255	rea(3) = cos_rot
	2256
	2257	!
[1864]	2258	!-- To respect the yawing angle for the calculations of
	2259	!-- velocities and forces the unit vectors perpendicular to the
	2260	!-- rotor area in direction of the positive yaw angle are defined:
[1819]	2261	ren(1) = cos_yaw
	2262	ren(2) = - sin_yaw
	2263	ren(3) = 0.0_wp
	2264	!
	2265	!-- Multiplication with the coordinate transformation matrix
[1864]	2266	!-- gives the final unit vector with consideration of the rotor
	2267	!-- tilt:
[1819]	2268	rote = MATMUL( rot_coord_trans(inot,:,:), re )
	2269	rota = MATMUL( rot_coord_trans(inot,:,:), rea )
	2270	rotn = MATMUL( rot_coord_trans(inot,:,:), ren )
	2271	!
	2272	!-- Coordinates of the single segments (center points):
[4447]	2273	rbx(ring,rseg) = hub_x(inot) + cur_r * rote(1)
[1819]	2274
[4447]	2275	rby(ring,rseg) = hub_y(inot) + cur_r * rote(2)
[1819]	2276
[4447]	2277	rbz(ring,rseg) = hub_z(inot) + cur_r * rote(3)
[1819]	2278
	2279	!
[1864]	2280	!-- !-----------------------------------------------------------!
	2281	!-- !-- Calculation of various angles and relative velocities --!
	2282	!-- !-----------------------------------------------------------!
[1819]	2283	!
[1864]	2284	!-- In the following the 3D-velocity field is projected its
[2553]	2285	!-- components perpendicular and parallel to the rotor area
[1819]	2286	!-- The calculation of forces will be done in the rotor-
	2287	!-- coordinates y' and z.
	2288	!-- The yaw angle will be reintroduced when the force is applied
	2289	!-- on the hydrodynamic equations
[1864]	2290	!
	2291	!-- Projection of the xy-velocities relative to the rotor area
	2292	!
[1819]	2293	!-- Velocity perpendicular to the rotor area:
[1864]	2294	u_rot = u_int(inot,ring,rseg)*rotn(1) + &
	2295	v_int(inot,ring,rseg)*rotn(2) + &
[1819]	2296	w_int(inot,ring,rseg)*rotn(3)
	2297	!
[1864]	2298	!-- Projection of the 3D-velocity vector in the azimuthal
	2299	!-- direction:
	2300	vtheta(rseg) = rota(1) * u_int(inot,ring,rseg) + &
	2301	rota(2) * v_int(inot,ring,rseg) + &
[1819]	2302	rota(3) * w_int(inot,ring,rseg)
	2303	!
[1864]	2304	!-- Determination of the angle phi_rel between the rotor plane
	2305	!-- and the direction of the flow relative to the rotor:
[1819]	2306
[4434]	2307	phi_rel(rseg) = ATAN2( u_rot , &
[4447]	2308	( rotor_speed(inot) * cur_r - &
[1819]	2309	vtheta(rseg) ) )
	2310
	2311	!
[1864]	2312	!-- Interpolation of the local pitch angle from tabulated values
	2313	!-- to the current radial position:
[1819]	2314
	2315	lct=minloc(ABS(cur_r-lrd))
	2316	rad_d=cur_r-lrd(lct)
	2317
	2318	IF (cur_r == 0.0_wp) THEN
	2319	alpha_attack(rseg) = 0.0_wp
	2320	ELSE IF (cur_r >= lrd(size(ard))) THEN
[1864]	2321	alpha_attack(rseg) = ( ard(size(ard)) + &
	2322	ard(size(ard)-1) ) / 2.0_wp
[1819]	2323	ELSE
[1864]	2324	alpha_attack(rseg) = ( ard(lct(1)) * &
	2325	( ( lrd(lct(1)+1) - cur_r ) / &
	2326	( lrd(lct(1)+1) - lrd(lct(1)) ) &
	2327	) ) + ( ard(lct(1)+1) * &
	2328	( ( cur_r - lrd(lct(1)) ) / &
	2329	( lrd(lct(1)+1) - lrd(lct(1)) ) ) )
[1819]	2330	ENDIF
	2331
	2332	!
[1864]	2333	!-- In Fortran radian instead of degree is used as unit for all
	2334	!-- angles. Therefore, a transformation from angles given in
	2335	!-- degree to angles given in radian is necessary here:
	2336	alpha_attack(rseg) = alpha_attack(rseg) * &
[1819]	2337	( (2.0_wp*pi) / 360.0_wp )
	2338	!
[1864]	2339	!-- Substraction of the local pitch angle to obtain the local
	2340	!-- angle of attack:
[1819]	2341	alpha_attack(rseg) = phi_rel(rseg) - alpha_attack(rseg)
	2342	!
[1864]	2343	!-- Preliminary transformation back from angles given in radian
	2344	!-- to angles given in degree:
	2345	alpha_attack(rseg) = alpha_attack(rseg) * &
[1819]	2346	( 360.0_wp / (2.0_wp*pi) )
	2347	!
[1864]	2348	!-- Correct with collective pitch angle:
[4447]	2349	alpha_attack(rseg) = alpha_attack(rseg) - pitch_angle(inot)
[1819]	2350
	2351	!
[1864]	2352	!-- Determination of the magnitude of the flow velocity relative
	2353	!-- to the rotor:
[1912]	2354	vrel(rseg) = SQRT( u_rot**2 + &
[4447]	2355	( rotor_speed(inot) * cur_r - &
[1819]	2356	vtheta(rseg) )**2 )
	2357
	2358	!
[1864]	2359	!-- !-----------------------------------------------------------!
	2360	!-- !-- Interpolation of chord as well as lift and drag --!
	2361	!-- !-- coefficients from tabulated values --!
	2362	!-- !-----------------------------------------------------------!
[1819]	2363
	2364	!
[1864]	2365	!-- Interpolation of the chord_length from tabulated values to
	2366	!-- the current radial position:
[1819]	2367
	2368	IF (cur_r == 0.0_wp) THEN
	2369	chord(rseg) = 0.0_wp
	2370	ELSE IF (cur_r >= lrd(size(crd))) THEN
[1864]	2371	chord(rseg) = (crd(size(crd)) + ard(size(crd)-1)) / 2.0_wp
[1819]	2372	ELSE
[1864]	2373	chord(rseg) = ( crd(lct(1)) * &
	2374	( ( lrd(lct(1)+1) - cur_r ) / &
	2375	( lrd(lct(1)+1) - lrd(lct(1)) ) ) ) + &
	2376	( crd(lct(1)+1) * &
	2377	( ( cur_r-lrd(lct(1)) ) / &
	2378	( lrd(lct(1)+1) - lrd(lct(1)) ) ) )
[1819]	2379	ENDIF
	2380
	2381	!
	2382	!-- Determine index of current angle of attack, needed for
[1864]	2383	!-- finding the appropriate interpolated values of the lift and
[2836]	2384	!-- drag coefficients (-180.0 degrees = 1, +180.0 degrees = 3601,
	2385	!-- so one index every 0.1 degrees):
[1864]	2386	iialpha = CEILING( ( alpha_attack(rseg) + 180.0_wp ) &
[2836]	2387	* ( 1.0_wp / accu_cl_cd_tab ) ) + 1.0_wp
[1819]	2388	!
	2389	!-- Determine index of current radial position, needed for
[1864]	2390	!-- finding the appropriate interpolated values of the lift and
	2391	!-- drag coefficients (one index every 0.1 m):
[1819]	2392	iir = CEILING( cur_r * 10.0_wp )
	2393	!
[1864]	2394	!-- Read in interpolated values of the lift and drag coefficients
	2395	!-- for the current radial position and angle of attack:
[1839]	2396	turb_cl(rseg) = turb_cl_tab(iialpha,iir)
	2397	turb_cd(rseg) = turb_cd_tab(iialpha,iir)
[1819]	2398
	2399	!
[1864]	2400	!-- Final transformation back from angles given in degree to
	2401	!-- angles given in radian:
	2402	alpha_attack(rseg) = alpha_attack(rseg) * &
[1819]	2403	( (2.0_wp*pi) / 360.0_wp )
	2404
[4447]	2405	IF ( tip_loss_correction ) THEN
[2152]	2406
	2407	!-- Tip loss correction following Schito
	2408	!-- Schito applies the tip loss correction only to the lift force
	2409	!-- Therefore, the tip loss correction is only applied to the lift
	2410	!-- coefficient and not to the drag coefficient in our case
	2411	!--
	2412	tl_factor = ( 2.0 / pi ) * &
[4447]	2413	ACOS( EXP( -1.0 * ( 3.0 * ( rotor_radius(inot) - cur_r ) / &
[2152]	2414	( 2.0 * cur_r * abs( sin( phi_rel(rseg) ) ) ) ) ) )
	2415
	2416	turb_cl(rseg) = tl_factor * turb_cl(rseg)
	2417
[2894]	2418	ENDIF
[1819]	2419	!
	2420	!-- !-----------------------------------------------------!
	2421	!-- !-- Calculation of the forces --!
	2422	!-- !-----------------------------------------------------!
	2423
	2424	!
[1864]	2425	!-- Calculate the pre_factor for the thrust and torque forces:
[1819]	2426
	2427	pre_factor = 0.5_wp * (vrel(rseg)*2) 3.0_wp * &
	2428	chord(rseg) * delta_r(inot) / nsegs(ring,inot)
	2429
	2430	!
[1864]	2431	!-- Calculate the thrust force (x-component of the total force)
	2432	!-- for each ring segment:
	2433	thrust_seg(rseg) = pre_factor * &
	2434	( turb_cl(rseg) * COS(phi_rel(rseg)) + &
	2435	turb_cd(rseg) * SIN(phi_rel(rseg)) )
[1819]	2436
	2437	!
[1864]	2438	!-- Determination of the second of the additional forces acting
	2439	!-- on the flow in the azimuthal direction: force vector as basis
	2440	!-- for torque (torque itself would be the vector product of the
	2441	!-- radius vector and the force vector):
	2442	torque_seg = pre_factor * &
	2443	( turb_cl(rseg) * SIN(phi_rel(rseg)) - &
[1839]	2444	turb_cd(rseg) * COS(phi_rel(rseg)) )
[1819]	2445	!
	2446	!-- Decomposition of the force vector into two parts:
[1864]	2447	!-- One acting along the y-direction and one acting along the
	2448	!-- z-direction of the rotor coordinate system:
[1819]	2449
	2450	torque_seg_y(rseg) = -torque_seg * sin_rot
	2451	torque_seg_z(rseg) = torque_seg * cos_rot
	2452
[1912]	2453	!
	2454	!-- Add the segment thrust to the thrust of the whole rotor
[3832]	2455	!$OMP CRITICAL
[1912]	2456	thrust_rotor(inot) = thrust_rotor(inot) + &
	2457	thrust_seg(rseg)
	2458
	2459
[1819]	2460	torque_total(inot) = torque_total(inot) + (torque_seg * cur_r)
[3832]	2461	!$OMP END CRITICAL
[1819]	2462
[1864]	2463	ENDDO !-- end of loop over ring segments
[1819]	2464
	2465	!
[1864]	2466	!-- Restore the forces into arrays containing all the segments of
	2467	!-- each ring:
[1819]	2468	thrust_ring(ring,:) = thrust_seg(:)
	2469	torque_ring_y(ring,:) = torque_seg_y(:)
	2470	torque_ring_z(ring,:) = torque_seg_z(:)
	2471
	2472
[1864]	2473	ENDDO !-- end of loop over rings
[3832]	2474	!$OMP END PARALLEL
[1819]	2475
	2476
[1864]	2477	CALL cpu_log( log_point_s(62), 'wtm_controller', 'start' )
[1819]	2478
[1912]	2479
	2480	IF ( speed_control ) THEN
	2481	!
	2482	!-- Calculation of the current generator speed for rotor speed control
	2483
	2484	!
	2485	!-- The acceleration of the rotor speed is calculated from
	2486	!-- the force balance of the accelerating torque
	2487	!-- and the torque of the rotating rotor and generator
[4447]	2488	om_rate = ( torque_total(inot) * air_density * gear_efficiency - &
	2489	gear_ratio * torque_gen_old(inot) ) / &
	2490	( rotor_inertia + &
	2491	gear_ratio * gear_ratio * generator_inertia ) * dt_3d
[1819]	2492
[1912]	2493	!
	2494	!-- The generator speed is given by the product of gear gear_ratio
	2495	!-- and rotor speed
[4447]	2496	generator_speed(inot) = gear_ratio * ( rotor_speed(inot) + om_rate )
[1912]	2497
	2498	ENDIF
	2499
[1864]	2500	IF ( pitch_control ) THEN
[1819]	2501
[1912]	2502	!
	2503	!-- If the current generator speed is above rated, the pitch is not
	2504	!-- saturated and the change from the last time step is within the
	2505	!-- maximum pitch rate, then the pitch loop is repeated with a pitch
	2506	!-- gain
[4447]	2507	IF ( ( generator_speed(inot) > generator_speed_rated ) .AND. &
	2508	( pitch_angle(inot) < 25.0_wp ) .AND. &
	2509	( pitch_angle(inot) < pitch_angle_old(inot) + &
[1912]	2510	pitch_rate * dt_3d ) ) THEN
[1864]	2511	pitch_sw = .TRUE.
[1912]	2512	!
	2513	!-- Go back to beginning of pit_loop
	2514	CYCLE pit_loop
[1819]	2515	ENDIF
[1912]	2516
	2517	!
	2518	!-- The current pitch is saved for the next time step
[4447]	2519	pitch_angle_old(inot) = pitch_angle(inot)
[1864]	2520	pitch_sw = .FALSE.
[1819]	2521	ENDIF
[1912]	2522	EXIT pit_loop
	2523	ENDDO pit_loop ! Recursive pitch control loop
[1819]	2524
[1864]	2525
[1819]	2526	!
[1864]	2527	!-- Call the rotor speed controller
	2528
[1819]	2529	IF ( speed_control ) THEN
	2530	!
[1864]	2531	!-- Find processor at i_hub, j_hub
[1912]	2532	IF ( ( nxl <= i_hub(inot) ) .AND. ( nxr >= i_hub(inot) ) ) &
	2533	THEN
	2534	IF ( ( nys <= j_hub(inot) ) .AND. ( nyn >= j_hub(inot) ) )&
	2535	THEN
[1864]	2536	CALL wtm_speed_control( inot )
	2537	ENDIF
[1912]	2538	ENDIF
[1864]	2539
[1819]	2540	ENDIF
	2541
	2542
[1864]	2543	CALL cpu_log( log_point_s(62), 'wtm_controller', 'stop' )
[1819]	2544
[1864]	2545	CALL cpu_log( log_point_s(63), 'wtm_smearing', 'start' )
[1819]	2546
	2547
[1864]	2548	!-- !-----------------------------------------------------------------!
	2549	!-- !-- Regularization kernel --!
	2550	!-- !-- Smearing of the forces and interpolation to cartesian grid --!
	2551	!-- !-----------------------------------------------------------------!
[1819]	2552	!
[1864]	2553	!-- The aerodynamic blade forces need to be distributed smoothly on
	2554	!-- several mesh points in order to avoid singular behaviour
[1819]	2555	!
	2556	!-- Summation over sum of weighted forces. The weighting factor
[1864]	2557	!-- (calculated in user_init) includes information on the distance
	2558	!-- between the center of the grid cell and the rotor segment under
	2559	!-- consideration
[1819]	2560	!
[1864]	2561	!-- To save computing time, apply smearing only for the relevant part
	2562	!-- of the model domain:
[1819]	2563	!
	2564	!--
	2565	!-- Calculation of the boundaries:
[4447]	2566	i_smear(inot) = CEILING( ( rotor_radius(inot) * ABS( roty(inot,1) ) + &
[1864]	2567	eps_min ) / dx )
[4447]	2568	j_smear(inot) = CEILING( ( rotor_radius(inot) * ABS( roty(inot,2) ) + &
[1864]	2569	eps_min ) / dy )
[1819]	2570
[3832]	2571	!$OMP PARALLEL PRIVATE (i, j, k, ring, rseg, flag, dist_u_3d, dist_v_3d, dist_w_3d)
	2572	!$OMP DO
[1864]	2573	DO i = MAX( nxl, i_hub(inot) - i_smear(inot) ), &
[1819]	2574	MIN( nxr, i_hub(inot) + i_smear(inot) )
[1864]	2575	DO j = MAX( nys, j_hub(inot) - j_smear(inot) ), &
[1819]	2576	MIN( nyn, j_hub(inot) + j_smear(inot) )
[2232]	2577	! DO k = MAX( nzb_u_inner(j,i)+1, k_hub(inot) - k_smear(inot) ), &
	2578	! k_hub(inot) + k_smear(inot)
	2579	DO k = nzb+1, k_hub(inot) + k_smear(inot)
[1819]	2580	DO ring = 1, nrings(inot)
	2581	DO rseg = 1, nsegs(ring,inot)
	2582	!
[2232]	2583	!-- Predetermine flag to mask topography
[4346]	2584	flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_total_0(k,j,i), 1 ) )
[2232]	2585
	2586	!
[1819]	2587	!-- Determine the square of the distance between the
	2588	!-- current grid point and each rotor area segment:
[1864]	2589	dist_u_3d = ( i * dx - rbx(ring,rseg) )**2 + &
	2590	( j * dy + 0.5_wp * dy - rby(ring,rseg) )**2 + &
[3065]	2591	( k * dz(1) - 0.5_wp * dz(1) - rbz(ring,rseg) )**2
[1864]	2592	dist_v_3d = ( i * dx + 0.5_wp * dx - rbx(ring,rseg) )**2 + &
	2593	( j * dy - rby(ring,rseg) )**2 + &
[3065]	2594	( k * dz(1) - 0.5_wp * dz(1) - rbz(ring,rseg) )**2
[1864]	2595	dist_w_3d = ( i * dx + 0.5_wp * dx - rbx(ring,rseg) )**2 + &
	2596	( j * dy + 0.5_wp * dy - rby(ring,rseg) )**2 + &
[3065]	2597	( k * dz(1) - rbz(ring,rseg) )**2
[1819]	2598
	2599	!
	2600	!-- 3D-smearing of the forces with a polynomial function
	2601	!-- (much faster than the old Gaussian function), using
	2602	!-- some parameters that have been calculated in user_init.
	2603	!-- The function is only similar to Gaussian function for
	2604	!-- squared distances <= eps_min2:
	2605	IF ( dist_u_3d <= eps_min2 ) THEN
[2232]	2606	thrust(k,j,i) = thrust(k,j,i) + &
	2607	thrust_ring(ring,rseg) * &
	2608	( ( pol_a * dist_u_3d - pol_b ) * &
	2609	dist_u_3d + 1.0_wp ) * eps_factor *&
	2610	flag
[1819]	2611	ENDIF
	2612	IF ( dist_v_3d <= eps_min2 ) THEN
[2232]	2613	torque_y(k,j,i) = torque_y(k,j,i) + &
	2614	torque_ring_y(ring,rseg) * &
	2615	( ( pol_a * dist_v_3d - pol_b ) * &
	2616	dist_v_3d + 1.0_wp ) * eps_factor * &
	2617	flag
[1819]	2618	ENDIF
	2619	IF ( dist_w_3d <= eps_min2 ) THEN
[2232]	2620	torque_z(k,j,i) = torque_z(k,j,i) + &
	2621	torque_ring_z(ring,rseg) * &
	2622	( ( pol_a * dist_w_3d - pol_b ) * &
	2623	dist_w_3d + 1.0_wp ) * eps_factor * &
	2624	flag
[1819]	2625	ENDIF
	2626
	2627	ENDDO ! End of loop over rseg
	2628	ENDDO ! End of loop over ring
	2629
	2630	!
	2631	!-- Rotation of force components:
[2232]	2632	rot_tend_x(k,j,i) = rot_tend_x(k,j,i) + ( &
[1864]	2633	thrust(k,j,i)*rotx(inot,1) + &
	2634	torque_y(k,j,i)*roty(inot,1) + &
[2232]	2635	torque_z(k,j,i)*rotz(inot,1) &
	2636	) * flag
[1819]	2637
[2232]	2638	rot_tend_y(k,j,i) = rot_tend_y(k,j,i) + ( &
[1864]	2639	thrust(k,j,i)*rotx(inot,2) + &
	2640	torque_y(k,j,i)*roty(inot,2) + &
[2232]	2641	torque_z(k,j,i)*rotz(inot,2) &
	2642	) * flag
[1819]	2643
[2232]	2644	rot_tend_z(k,j,i) = rot_tend_z(k,j,i) + ( &
[1864]	2645	thrust(k,j,i)*rotx(inot,3) + &
	2646	torque_y(k,j,i)*roty(inot,3) + &
[2232]	2647	torque_z(k,j,i)*rotz(inot,3) &
	2648	) * flag
[1819]	2649
	2650	ENDDO ! End of loop over k
	2651	ENDDO ! End of loop over j
	2652	ENDDO ! End of loop over i
[3832]	2653	!$OMP END PARALLEL
[1819]	2654
[1864]	2655	CALL cpu_log( log_point_s(63), 'wtm_smearing', 'stop' )
[1819]	2656
[1912]	2657	ENDDO !-- end of loop over turbines
[1819]	2658
	2659
	2660	IF ( yaw_control ) THEN
	2661	!
	2662	!-- Allocate arrays for yaw control at first call
	2663	!-- Can't be allocated before dt_3d is set
	2664	IF ( start_up ) THEN
[4434]	2665	WDLON = MAX( 1 , NINT( 30.0_wp / dt_3d ) ) ! 30s running mean array
[4447]	2666	ALLOCATE( wd30(1:n_turbines,1:WDLON) )
[1912]	2667	wd30 = 999.0_wp ! Set to dummy value
[1819]	2668	ALLOCATE( wd30_l(1:WDLON) )
	2669
[4434]	2670	WDSHO = MAX( 1 , NINT( 2.0_wp / dt_3d ) ) ! 2s running mean array
[4447]	2671	ALLOCATE( wd2(1:n_turbines,1:WDSHO) )
[1912]	2672	wd2 = 999.0_wp ! Set to dummy value
[1819]	2673	ALLOCATE( wd2_l(1:WDSHO) )
	2674	start_up = .FALSE.
	2675	ENDIF
	2676
	2677	!
	2678	!-- Calculate the inflow wind speed
	2679	!--
	2680	!-- Loop over number of turbines:
[4447]	2681	DO inot = 1, n_turbines
[1819]	2682	!
	2683	!-- Find processor at i_hub, j_hub
[1912]	2684	IF ( ( nxl <= i_hub(inot) ) .AND. ( nxr >= i_hub(inot) ) ) &
	2685	THEN
	2686	IF ( ( nys <= j_hub(inot) ) .AND. ( nyn >= j_hub(inot) ) )&
	2687	THEN
[1864]	2688
[1819]	2689	u_inflow_l(inot) = u(k_hub(inot),j_hub(inot),i_hub(inot))
[1864]	2690
[1912]	2691	wdir_l(inot) = -1.0_wp * ATAN2( &
	2692	0.5_wp * ( v(k_hub(inot),j_hub(inot),i_hub(inot)+1) + &
	2693	v(k_hub(inot),j_hub(inot),i_hub(inot)) ) , &
	2694	0.5_wp * ( u(k_hub(inot),j_hub(inot)+1,i_hub(inot)) + &
	2695	u(k_hub(inot),j_hub(inot),i_hub(inot)) ) )
[1864]	2696
	2697	CALL wtm_yawcontrol( inot )
	2698
[4447]	2699	yaw_angle_l(inot) = yaw_angle(inot)
[2015]	2700
[1819]	2701	ENDIF
	2702	ENDIF
	2703
[1864]	2704	ENDDO !-- end of loop over turbines
	2705
	2706	!
[1929]	2707	!-- Transfer of information to the other cpus
	2708	#if defined( __parallel )
[4447]	2709	CALL MPI_ALLREDUCE( u_inflow_l, u_inflow, n_turbines, MPI_REAL, &
[1864]	2710	MPI_SUM, comm2d, ierr )
[4447]	2711	CALL MPI_ALLREDUCE( wdir_l, wdir, n_turbines, MPI_REAL, MPI_SUM, &
[1864]	2712	comm2d, ierr )
[4447]	2713	CALL MPI_ALLREDUCE( yaw_angle_l, yaw_angle, n_turbines, MPI_REAL, &
[1864]	2714	MPI_SUM, comm2d, ierr )
[1929]	2715	#else
	2716	u_inflow = u_inflow_l
	2717	wdir = wdir_l
[4447]	2718	yaw_angle = yaw_angle_l
[2015]	2719
	2720
[1929]	2721	#endif
[4447]	2722	DO inot = 1, n_turbines
[1864]	2723	!
	2724	!-- Update rotor orientation
	2725	CALL wtm_rotate_rotor( inot )
[1819]	2726
	2727	ENDDO ! End of loop over turbines
	2728
[2894]	2729	ENDIF ! end of yaw control
[1864]	2730
	2731	IF ( speed_control ) THEN
	2732	!
	2733	!-- Transfer of information to the other cpus
[4447]	2734	! CALL MPI_ALLREDUCE( generator_speed, generator_speed_old, n_turbines, &
[1912]	2735	! MPI_REAL,MPI_SUM, comm2d, ierr )
[1929]	2736	#if defined( __parallel )
[4447]	2737	CALL MPI_ALLREDUCE( torque_gen, torque_gen_old, n_turbines, &
[1864]	2738	MPI_REAL, MPI_SUM, comm2d, ierr )
[4447]	2739	CALL MPI_ALLREDUCE( rotor_speed_l, rotor_speed, n_turbines, &
[1864]	2740	MPI_REAL, MPI_SUM, comm2d, ierr )
[4447]	2741	CALL MPI_ALLREDUCE( generator_speed_f, generator_speed_f_old, n_turbines, &
[1912]	2742	MPI_REAL, MPI_SUM, comm2d, ierr )
[1929]	2743	#else
	2744	torque_gen_old = torque_gen
[4447]	2745	rotor_speed = rotor_speed_l
	2746	generator_speed_f_old = generator_speed_f
[1929]	2747	#endif
[1864]	2748
	2749	ENDIF
[1819]	2750
[4411]	2751
	2752
	2753
[4447]	2754	DO inot = 1, n_turbines
[1819]	2755
[4411]	2756
	2757
[1819]	2758	IF ( myid == 0 ) THEN
	2759	IF ( openfile_turb_mod(400+inot)%opened ) THEN
[4447]	2760	WRITE ( 400+inot, 106 ) time_since_reference_point, rotor_speed(inot), &
	2761	generator_speed(inot), torque_gen_old(inot), &
	2762	torque_total(inot), pitch_angle(inot), &
	2763	torque_gen_old(inot)generator_speed(inot)generator_efficiency, &
	2764	torque_total(inot)rotor_speed(inot)air_density, &
	2765	thrust_rotor(inot), &
	2766	wdir(inot)*180.0_wp/pi, &
	2767	(yaw_angle(inot))*180.0_wp/pi
[1912]	2768
[1819]	2769	ELSE
	2770
[2669]	2771	WRITE ( turbine_id,'(A2,I2.2)') '_T', inot
	2772	OPEN ( 400+inot, FILE=( 'WTM_OUTPUT_DATA' // &
	2773	TRIM( coupling_char ) // &
	2774	turbine_id ), FORM='FORMATTED' )
[1819]	2775	WRITE ( 400+inot, 105 ) inot
[4447]	2776	WRITE ( 400+inot, 106 ) time_since_reference_point, rotor_speed(inot), &
	2777	generator_speed(inot), torque_gen_old(inot), &
	2778	torque_total(inot), pitch_angle(inot), &
	2779	torque_gen_old(inot)generator_speed(inot)generator_efficiency, &
	2780	torque_total(inot)rotor_speed(inot)air_density, &
	2781	thrust_rotor(inot), &
	2782	wdir(inot)*180.0_wp/pi, &
	2783	(yaw_angle(inot))*180.0_wp/pi
[1819]	2784	ENDIF
	2785	ENDIF
	2786
[1912]	2787	!-- Set open flag
[1819]	2788	openfile_turb_mod(400+inot)%opened = .TRUE.
[1864]	2789	ENDDO !-- end of loop over turbines
[1819]	2790
[4411]	2791
	2792
	2793	ENDIF
[1819]	2794
[4411]	2795
[1864]	2796	CALL cpu_log( log_point_s(61), 'wtm_forces', 'stop' )
[1819]	2797
[1912]	2798	!
	2799	!-- Formats
[1819]	2800	105 FORMAT ('Turbine control data for turbine ',I2,1X,':'/ &
	2801	&'----------------------------------------'/ &
[4326]	2802	&' Time RSpeed GSpeed GenTorque AeroTorque ', &
	2803	'Pitch Power(Gen) Power(Rot) RotThrust WDirection ', &
	2804	'YawOrient')
[1819]	2805
[4326]	2806	106 FORMAT (F9.2,2X,F7.3,2X,F7.2,2X,F12.1,3X,F12.1,1X,F6.2,2X,F12.1,2X, &
	2807	F12.1,1X,F12.1,4X,F7.2,4X,F7.2)
[1819]	2808
[4411]	2809
	2810
[1819]	2811	END SUBROUTINE wtm_forces
	2812
	2813
[1839]	2814	!------------------------------------------------------------------------------!
	2815	! Description:
	2816	! ------------
	2817	!> Yaw controller for the wind turbine model
	2818	!------------------------------------------------------------------------------!
	2819	SUBROUTINE wtm_yawcontrol( inot )
	2820
[1819]	2821	USE kinds
[1839]	2822
	2823	IMPLICIT NONE
[1819]	2824
	2825	INTEGER(iwp) :: inot
	2826	INTEGER(iwp) :: i_wd_30
	2827	REAL(wp) :: missal
	2828
	2829	i_wd_30 = 0_iwp
	2830
	2831	!
[1864]	2832	!-- The yaw controller computes a 30s running mean of the wind direction.
	2833	!-- If the difference between turbine alignment and wind direction exceeds
[3593]	2834	!-- 5 degrees, the turbine is yawed. The mechanism stops as soon as the 2s-running
	2835	!-- mean of the missalignment is smaller than 0.5 degrees.
[1864]	2836	!-- Attention: If the timestep during the simulation changes significantly
	2837	!-- the lengths of the running means change and it does not correspond to
	2838	!-- 30s/2s anymore.
	2839	!-- ! Needs to be modified for these situations !
	2840	!-- For wind from the east, the averaging of the wind direction could cause
	2841	!-- problems and the yaw controller is probably flawed. -> Routine for
	2842	!-- averaging needs to be improved!
	2843	!
	2844	!-- Check if turbine is not yawing
[1819]	2845	IF ( .NOT. doyaw(inot) ) THEN
[1843]	2846	!
[1864]	2847	!-- Write current wind direction into array
[1843]	2848	wd30_l = wd30(inot,:)
	2849	wd30_l = CSHIFT( wd30_l, SHIFT=-1 )
[1819]	2850	wd30_l(1) = wdir(inot)
[1843]	2851	!
[1864]	2852	!-- Check if array is full ( no more dummies )
[1819]	2853	IF ( .NOT. ANY( wd30_l == 999.) ) THEN
	2854
[4447]	2855	missal = SUM( wd30_l ) / SIZE( wd30_l ) - yaw_angle(inot)
[1819]	2856	!
[4447]	2857	!-- Check if turbine is missaligned by more than yaw_misalignment_max
	2858	IF ( ABS( missal ) > yaw_misalignment_max ) THEN
[1843]	2859	!
[1864]	2860	!-- Check in which direction to yaw
[1843]	2861	yawdir(inot) = SIGN( 1.0_wp, missal )
[1819]	2862	!
[1864]	2863	!-- Start yawing of turbine
[4447]	2864	yaw_angle(inot) = yaw_angle(inot) + yawdir(inot) * yaw_speed * dt_3d
[1819]	2865	doyaw(inot) = .TRUE.
[1864]	2866	wd30_l = 999. ! fill with dummies again
[1819]	2867	ENDIF
	2868	ENDIF
	2869
	2870	wd30(inot,:) = wd30_l
	2871
	2872	!
[1864]	2873	!-- If turbine is already yawing:
	2874	!-- Initialize 2 s running mean and yaw until the missalignment is smaller
[4447]	2875	!-- than yaw_misalignment_min
[1819]	2876
	2877	ELSE
	2878	!
	2879	!-- Initialize 2 s running mean
	2880	wd2_l = wd2(inot,:)
[1864]	2881	wd2_l = CSHIFT( wd2_l, SHIFT = -1 )
[1819]	2882	wd2_l(1) = wdir(inot)
[1843]	2883	!
[1864]	2884	!-- Check if array is full ( no more dummies )
	2885	IF ( .NOT. ANY( wd2_l == 999.0_wp ) ) THEN
	2886	!
	2887	!-- Calculate missalignment of turbine
[4447]	2888	missal = SUM( wd2_l - yaw_angle(inot) ) / SIZE( wd2_l )
[1864]	2889	!
	2890	!-- Check if missalignment is still larger than 0.5 degree and if the
	2891	!-- yaw direction is still right
[4447]	2892	IF ( ( ABS( missal ) > yaw_misalignment_min ) .AND. &
[1864]	2893	( yawdir(inot) == SIGN( 1.0_wp, missal ) ) ) THEN
	2894	!
	2895	!-- Continue yawing
[4447]	2896	yaw_angle(inot) = yaw_angle(inot) + yawdir(inot) * yaw_speed * dt_3d
[1819]	2897	ELSE
[1864]	2898	!
	2899	!-- Stop yawing
[1819]	2900	doyaw(inot) = .FALSE.
[1864]	2901	wd2_l = 999.0_wp ! fill with dummies again
[1819]	2902	ENDIF
	2903	ELSE
[1864]	2904	!
	2905	!-- Continue yawing
[4447]	2906	yaw_angle(inot) = yaw_angle(inot) + yawdir(inot) * yaw_speed * dt_3d
[1819]	2907	ENDIF
	2908
	2909	wd2(inot,:) = wd2_l
	2910
	2911	ENDIF
	2912
[1839]	2913	END SUBROUTINE wtm_yawcontrol
[1819]	2914
[1864]	2915
[1819]	2916	!------------------------------------------------------------------------------!
	2917	! Description:
	2918	! ------------
[1864]	2919	!> Initialization of the speed control
	2920	!------------------------------------------------------------------------------!
	2921	SUBROUTINE wtm_init_speed_control
	2922
	2923
	2924	IMPLICIT NONE
	2925
	2926	!
	2927	!-- If speed control is set, remaining variables and control_parameters for
	2928	!-- the control algorithm are calculated
	2929	!
	2930	!-- Calculate slope constant for region 15
[4447]	2931	slope15 = ( region_2_slope * region_2_min * region_2_min ) / &
	2932	( region_2_min - region_15_min )
[1864]	2933	!
	2934	!-- Calculate upper limit of slipage region
[4447]	2935	vs_sysp = generator_speed_rated / 1.1_wp
[1864]	2936	!
	2937	!-- Calculate slope of slipage region
[4447]	2938	region_25_slope = ( generator_power_rated / generator_speed_rated ) / &
	2939	( generator_speed_rated - vs_sysp )
[1864]	2940	!
	2941	!-- Calculate lower limit of slipage region
[4447]	2942	region_25_min = ( region_25_slope - SQRT( region_25_slope * &
	2943	( region_25_slope - 4.0_wp * region_2_slope * vs_sysp ) ) ) / &
	2944	( 2.0_wp * region_2_slope )
[1864]	2945	!
	2946	!-- Frequency for the simple low pass filter
[4447]	2947	Fcorner = 0.25_wp
[1864]	2948	!
	2949	!-- At the first timestep the torque is set to its maximum to prevent
	2950	!-- an overspeeding of the rotor
[2563]	2951	IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN
[4447]	2952	torque_gen_old(:) = generator_torque_max
[2563]	2953	ENDIF
[1864]	2954
	2955	END SUBROUTINE wtm_init_speed_control
	2956
	2957
	2958	!------------------------------------------------------------------------------!
	2959	! Description:
	2960	! ------------
	2961	!> Simple controller for the regulation of the rotor speed
	2962	!------------------------------------------------------------------------------!
	2963	SUBROUTINE wtm_speed_control( inot )
	2964
	2965
	2966	IMPLICIT NONE
	2967
[1912]	2968	INTEGER(iwp) :: inot
	2969
	2970
[1864]	2971
	2972	!
	2973	!-- The controller is based on the fortran script from Jonkman
	2974	!-- et al. 2009 "Definition of a 5 MW Reference Wind Turbine for
	2975	!-- offshore system developement"
	2976
	2977	!
	2978	!-- The generator speed is filtered by a low pass filter
	2979	!-- for the control of the generator torque
	2980	lp_coeff = EXP( -2.0_wp * 3.14_wp * dt_3d * Fcorner )
[4447]	2981	generator_speed_f(inot) = ( 1.0_wp - lp_coeff ) * generator_speed(inot) + lp_coeff *&
	2982	generator_speed_f_old(inot)
[1864]	2983
[4447]	2984	IF ( generator_speed_f(inot) <= region_15_min ) THEN
[1864]	2985	!
	2986	!-- Region 1: Generator torque is set to zero to accelerate the rotor:
	2987	torque_gen(inot) = 0
	2988
[4447]	2989	ELSEIF ( generator_speed_f(inot) <= region_2_min ) THEN
[1864]	2990	!
	2991	!-- Region 1.5: Generator torque is increasing linearly with rotor speed:
[4447]	2992	torque_gen(inot) = slope15 * ( generator_speed_f(inot) - region_15_min )
[1864]	2993
[4447]	2994	ELSEIF ( generator_speed_f(inot) <= region_25_min ) THEN
[1864]	2995	!
	2996	!-- Region 2: Generator torque is increased by the square of the generator
	2997	!-- speed to keep the TSR optimal:
[4447]	2998	torque_gen(inot) = region_2_slope * generator_speed_f(inot) * generator_speed_f(inot)
[1864]	2999
[4447]	3000	ELSEIF ( generator_speed_f(inot) < generator_speed_rated ) THEN
[1864]	3001	!
	3002	!-- Region 2.5: Slipage region between 2 and 3:
[4447]	3003	torque_gen(inot) = region_25_slope * ( generator_speed_f(inot) - vs_sysp )
[1864]	3004
	3005	ELSE
	3006	!
	3007	!-- Region 3: Generator torque is antiproportional to the rotor speed to
	3008	!-- keep the power constant:
[4447]	3009	torque_gen(inot) = generator_power_rated / generator_speed_f(inot)
[1864]	3010
	3011	ENDIF
	3012	!
	3013	!-- Calculate torque rate and confine with a max
	3014	trq_rate = ( torque_gen(inot) - torque_gen_old(inot) ) / dt_3d
[4447]	3015	trq_rate = MIN( MAX( trq_rate, -1.0_wp * generator_torque_rate_max ), &
	3016	generator_torque_rate_max )
[1864]	3017	!
	3018	!-- Calculate new gen torque and confine with max torque
	3019	torque_gen(inot) = torque_gen_old(inot) + trq_rate * dt_3d
[4447]	3020	torque_gen(inot) = MIN( torque_gen(inot), generator_torque_max )
[1864]	3021	!
	3022	!-- Overwrite values for next timestep
[4447]	3023	rotor_speed_l(inot) = generator_speed(inot) / gear_ratio
[1864]	3024
	3025
	3026	END SUBROUTINE wtm_speed_control
	3027
	3028
	3029	!------------------------------------------------------------------------------!
	3030	! Description:
	3031	! ------------
[1839]	3032	!> Application of the additional forces generated by the wind turbine on the
	3033	!> flow components (tendency terms)
	3034	!> Call for all grid points
[1819]	3035	!------------------------------------------------------------------------------!
[3875]	3036	SUBROUTINE wtm_actions( location )
[1819]	3037
	3038
[3875]	3039	CHARACTER (LEN=*) :: location !<
	3040
[1839]	3041	INTEGER(iwp) :: i !< running index
	3042	INTEGER(iwp) :: j !< running index
	3043	INTEGER(iwp) :: k !< running index
[1819]	3044
	3045
[3875]	3046	SELECT CASE ( location )
[1819]	3047
[3875]	3048	CASE ( 'before_timestep' )
	3049
	3050	CALL wtm_forces
	3051
	3052	CASE ( 'u-tendency' )
[1819]	3053	!
	3054	!-- Apply the x-component of the force to the u-component of the flow:
[4411]	3055	IF ( time_since_reference_point >= time_turbine_on ) THEN
[1819]	3056	DO i = nxlg, nxrg
	3057	DO j = nysg, nyng
[2553]	3058	DO k = nzb+1, MAXVAL(k_hub) + MAXVAL(k_smear)
[1819]	3059	!
[1864]	3060	!-- Calculate the thrust generated by the nacelle and the tower
[1912]	3061	tend_nac_x = 0.5_wp * nac_cd_surf(k,j,i) * &
[2553]	3062	SIGN( u(k,j,i)**2 , u(k,j,i) )
[1912]	3063	tend_tow_x = 0.5_wp * tow_cd_surf(k,j,i) * &
[1819]	3064	SIGN( u(k,j,i)**2 , u(k,j,i) )
[2553]	3065
[2232]	3066	tend(k,j,i) = tend(k,j,i) + ( - rot_tend_x(k,j,i) &
	3067	- tend_nac_x - tend_tow_x ) &
	3068	* MERGE( 1.0_wp, 0.0_wp, &
[4346]	3069	BTEST( wall_flags_total_0(k,j,i), 1 ) )
[1819]	3070	ENDDO
	3071	ENDDO
	3072	ENDDO
	3073	ENDIF
	3074
[3875]	3075	CASE ( 'v-tendency' )
[1819]	3076	!
	3077	!-- Apply the y-component of the force to the v-component of the flow:
[4411]	3078	IF ( time_since_reference_point >= time_turbine_on ) THEN
[1819]	3079	DO i = nxlg, nxrg
	3080	DO j = nysg, nyng
[2553]	3081	DO k = nzb+1, MAXVAL(k_hub) + MAXVAL(k_smear)
[1912]	3082	tend_nac_y = 0.5_wp * nac_cd_surf(k,j,i) * &
[1819]	3083	SIGN( v(k,j,i)**2 , v(k,j,i) )
[1912]	3084	tend_tow_y = 0.5_wp * tow_cd_surf(k,j,i) * &
[1819]	3085	SIGN( v(k,j,i)**2 , v(k,j,i) )
[2232]	3086	tend(k,j,i) = tend(k,j,i) + ( - rot_tend_y(k,j,i) &
	3087	- tend_nac_y - tend_tow_y ) &
	3088	* MERGE( 1.0_wp, 0.0_wp, &
[4346]	3089	BTEST( wall_flags_total_0(k,j,i), 2 ) )
[1819]	3090	ENDDO
	3091	ENDDO
	3092	ENDDO
	3093	ENDIF
	3094
[3875]	3095	CASE ( 'w-tendency' )
[1819]	3096	!
	3097	!-- Apply the z-component of the force to the w-component of the flow:
[4411]	3098	IF ( time_since_reference_point >= time_turbine_on ) THEN
[1819]	3099	DO i = nxlg, nxrg
	3100	DO j = nysg, nyng
[2553]	3101	DO k = nzb+1, MAXVAL(k_hub) + MAXVAL(k_smear)
[2232]	3102	tend(k,j,i) = tend(k,j,i) - rot_tend_z(k,j,i) &
	3103	* MERGE( 1.0_wp, 0.0_wp, &
[4346]	3104	BTEST( wall_flags_total_0(k,j,i), 3 ) )
[1819]	3105	ENDDO
	3106	ENDDO
	3107	ENDDO
	3108	ENDIF
	3109
	3110
	3111	CASE DEFAULT
[4056]	3112	CONTINUE
[1819]	3113
	3114	END SELECT
	3115
	3116
[3875]	3117	END SUBROUTINE wtm_actions
[1819]	3118
	3119
	3120	!------------------------------------------------------------------------------!
	3121	! Description:
	3122	! ------------
[1839]	3123	!> Application of the additional forces generated by the wind turbine on the
	3124	!> flow components (tendency terms)
	3125	!> Call for grid point i,j
[1819]	3126	!------------------------------------------------------------------------------!
[3875]	3127	SUBROUTINE wtm_actions_ij( i, j, location )
[1819]	3128
	3129
[3875]	3130	CHARACTER (LEN=*) :: location !<
[1839]	3131	INTEGER(iwp) :: i !< running index
	3132	INTEGER(iwp) :: j !< running index
	3133	INTEGER(iwp) :: k !< running index
[1819]	3134
[3875]	3135	SELECT CASE ( location )
[1819]	3136
[3875]	3137	CASE ( 'before_timestep' )
	3138
	3139	CALL wtm_forces
	3140
	3141	CASE ( 'u-tendency' )
[1819]	3142	!
	3143	!-- Apply the x-component of the force to the u-component of the flow:
[4411]	3144	IF ( time_since_reference_point >= time_turbine_on ) THEN
[2553]	3145	DO k = nzb+1, MAXVAL(k_hub) + MAXVAL(k_smear)
[1819]	3146	!
[1839]	3147	!-- Calculate the thrust generated by the nacelle and the tower
[1912]	3148	tend_nac_x = 0.5_wp * nac_cd_surf(k,j,i) * &
[1819]	3149	SIGN( u(k,j,i)**2 , u(k,j,i) )
[1912]	3150	tend_tow_x = 0.5_wp * tow_cd_surf(k,j,i) * &
[1819]	3151	SIGN( u(k,j,i)**2 , u(k,j,i) )
[2232]	3152	tend(k,j,i) = tend(k,j,i) + ( - rot_tend_x(k,j,i) &
	3153	- tend_nac_x - tend_tow_x ) &
	3154	* MERGE( 1.0_wp, 0.0_wp, &
[4346]	3155	BTEST( wall_flags_total_0(k,j,i), 1 ) )
[1819]	3156	ENDDO
	3157	ENDIF
	3158
[3875]	3159	CASE ( 'v-tendency' )
[1819]	3160	!
	3161	!-- Apply the y-component of the force to the v-component of the flow:
[4411]	3162	IF ( time_since_reference_point >= time_turbine_on ) THEN
[2553]	3163	DO k = nzb+1, MAXVAL(k_hub) + MAXVAL(k_smear)
[1912]	3164	tend_nac_y = 0.5_wp * nac_cd_surf(k,j,i) * &
[1819]	3165	SIGN( v(k,j,i)**2 , v(k,j,i) )
[1912]	3166	tend_tow_y = 0.5_wp * tow_cd_surf(k,j,i) * &
[1819]	3167	SIGN( v(k,j,i)**2 , v(k,j,i) )
[2232]	3168	tend(k,j,i) = tend(k,j,i) + ( - rot_tend_y(k,j,i) &
	3169	- tend_nac_y - tend_tow_y ) &
	3170	* MERGE( 1.0_wp, 0.0_wp, &
[4346]	3171	BTEST( wall_flags_total_0(k,j,i), 2 ) )
[2553]	3172	ENDDO
[1819]	3173	ENDIF
	3174
[3875]	3175	CASE ( 'w-tendency' )
[1819]	3176	!
	3177	!-- Apply the z-component of the force to the w-component of the flow:
[4411]	3178	IF ( time_since_reference_point >= time_turbine_on ) THEN
[2553]	3179	DO k = nzb+1, MAXVAL(k_hub) + MAXVAL(k_smear)
[2232]	3180	tend(k,j,i) = tend(k,j,i) - rot_tend_z(k,j,i) &
	3181	* MERGE( 1.0_wp, 0.0_wp, &
[4346]	3182	BTEST( wall_flags_total_0(k,j,i), 3 ) )
[1819]	3183	ENDDO
	3184	ENDIF
	3185
	3186
	3187	CASE DEFAULT
[4056]	3188	CONTINUE
[1819]	3189
	3190	END SELECT
	3191
	3192
[3875]	3193	END SUBROUTINE wtm_actions_ij
[1819]	3194
[4411]	3195
	3196	SUBROUTINE wtm_data_output
	3197
	3198
[4423]	3199	INTEGER(iwp) :: t_ind = 0 !< time index
[4411]	3200
	3201	INTEGER(iwp) :: return_value !< returned status value of called function
	3202
[4423]	3203	IF ( myid == 0 ) THEN
	3204
[4411]	3205	!
[4423]	3206	!-- At the first call of this routine write the spatial coordinates.
	3207	IF ( .NOT. initial_write_coordinates ) THEN
[4447]	3208	ALLOCATE ( output_values_1d_target(1:n_turbines) )
	3209	output_values_1d_target = hub_x(1:n_turbines)
[4423]	3210	output_values_1d_pointer => output_values_1d_target
	3211	return_value = dom_write_var( nc_filename, &
	3212	'x', &
	3213	values_realwp_1d = output_values_1d_pointer, &
	3214	bounds_start = (/1/), &
[4447]	3215	bounds_end = (/n_turbines/) )
[4411]	3216
[4447]	3217	output_values_1d_target = hub_y(1:n_turbines)
[4423]	3218	output_values_1d_pointer => output_values_1d_target
	3219	return_value = dom_write_var( nc_filename, &
	3220	'y', &
	3221	values_realwp_1d = output_values_1d_pointer, &
	3222	bounds_start = (/1/), &
[4447]	3223	bounds_end = (/n_turbines/) )
[4411]	3224
[4447]	3225	output_values_1d_target = hub_z(1:n_turbines)
[4423]	3226	output_values_1d_pointer => output_values_1d_target
	3227	return_value = dom_write_var( nc_filename, &
	3228	'z', &
	3229	values_realwp_1d = output_values_1d_pointer, &
	3230	bounds_start = (/1/), &
[4447]	3231	bounds_end = (/n_turbines/) )
[4411]	3232
[4423]	3233	initial_write_coordinates = .TRUE.
	3234	DEALLOCATE ( output_values_1d_target )
	3235	ENDIF
[4411]	3236
[4423]	3237	t_ind = t_ind + 1
[4411]	3238
[4447]	3239	ALLOCATE ( output_values_1d_target(1:n_turbines) )
	3240	output_values_1d_target = rotor_speed(:)
[4423]	3241	output_values_1d_pointer => output_values_1d_target
[4411]	3242
[4423]	3243	return_value = dom_write_var( nc_filename, &
	3244	'rotor_speed', &
	3245	values_realwp_1d = output_values_1d_pointer, &
	3246	bounds_start = (/1, t_ind/), &
[4447]	3247	bounds_end = (/n_turbines, t_ind /) )
[4411]	3248
[4447]	3249	output_values_1d_target = generator_speed(:)
[4423]	3250	output_values_1d_pointer => output_values_1d_target
	3251	return_value = dom_write_var( nc_filename, &
	3252	'generator_speed', &
	3253	values_realwp_1d = output_values_1d_pointer, &
	3254	bounds_start = (/1, t_ind/), &
[4447]	3255	bounds_end = (/n_turbines, t_ind /) )
[4411]	3256
[4423]	3257	output_values_1d_target = torque_gen_old(:)
	3258	output_values_1d_pointer => output_values_1d_target
[4411]	3259
[4423]	3260	return_value = dom_write_var( nc_filename, &
	3261	'generator_torque', &
	3262	values_realwp_1d = output_values_1d_pointer, &
	3263	bounds_start = (/1, t_ind/), &
[4447]	3264	bounds_end = (/n_turbines, t_ind /) )
[4411]	3265
[4423]	3266	output_values_1d_target = torque_total(:)
	3267	output_values_1d_pointer => output_values_1d_target
[4411]	3268
[4423]	3269	return_value = dom_write_var( nc_filename, &
	3270	'rotor_torque', &
	3271	values_realwp_1d = output_values_1d_pointer, &
	3272	bounds_start = (/1, t_ind/), &
[4447]	3273	bounds_end = (/n_turbines, t_ind /) )
[4411]	3274
[4447]	3275	output_values_1d_target = pitch_angle(:)
[4423]	3276	output_values_1d_pointer => output_values_1d_target
[4411]	3277
[4423]	3278	return_value = dom_write_var( nc_filename, &
	3279	'pitch_angle', &
	3280	values_realwp_1d = output_values_1d_pointer, &
	3281	bounds_start = (/1, t_ind/), &
[4447]	3282	bounds_end = (/n_turbines, t_ind /) )
[4411]	3283
[4447]	3284	output_values_1d_target = torque_gen_old(:)generator_speed(:)generator_efficiency
[4423]	3285	output_values_1d_pointer => output_values_1d_target
[4411]	3286
[4423]	3287	return_value = dom_write_var( nc_filename, &
	3288	'generator_power', &
	3289	values_realwp_1d = output_values_1d_pointer, &
	3290	bounds_start = (/1, t_ind/), &
[4447]	3291	bounds_end = (/n_turbines, t_ind /) )
[4411]	3292
[4447]	3293	DO inot = 1, n_turbines
	3294	output_values_1d_target(inot) = torque_total(inot)rotor_speed(inot)air_density
[4423]	3295	ENDDO
	3296	output_values_1d_pointer => output_values_1d_target
[4411]	3297
[4423]	3298	return_value = dom_write_var( nc_filename, &
	3299	'rotor_power', &
	3300	values_realwp_1d = output_values_1d_pointer, &
	3301	bounds_start = (/1, t_ind/), &
[4447]	3302	bounds_end = (/n_turbines, t_ind /) )
[4411]	3303
[4423]	3304	output_values_1d_target = thrust_rotor(:)
	3305	output_values_1d_pointer => output_values_1d_target
[4411]	3306
[4423]	3307	return_value = dom_write_var( nc_filename, &
	3308	'rotor_thrust', &
	3309	values_realwp_1d = output_values_1d_pointer, &
	3310	bounds_start = (/1, t_ind/), &
[4447]	3311	bounds_end = (/n_turbines, t_ind /) )
[4411]	3312
[4423]	3313	output_values_1d_target = wdir(:)*180.0_wp/pi
	3314	output_values_1d_pointer => output_values_1d_target
[4411]	3315
[4423]	3316	return_value = dom_write_var( nc_filename, &
	3317	'wind_direction', &
	3318	values_realwp_1d = output_values_1d_pointer, &
	3319	bounds_start = (/1, t_ind/), &
[4447]	3320	bounds_end = (/n_turbines, t_ind /) )
[4411]	3321
[4447]	3322	output_values_1d_target = (yaw_angle(:))*180.0_wp/pi
[4423]	3323	output_values_1d_pointer => output_values_1d_target
[4411]	3324
[4423]	3325	return_value = dom_write_var( nc_filename, &
	3326	'yaw_angle', &
	3327	values_realwp_1d = output_values_1d_pointer, &
	3328	bounds_start = (/1, t_ind/), &
[4447]	3329	bounds_end = (/n_turbines, t_ind /) )
[4411]	3330
[4423]	3331	output_values_0d_target = time_since_reference_point
	3332	output_values_0d_pointer => output_values_0d_target
[4411]	3333
[4423]	3334	return_value = dom_write_var( nc_filename, &
	3335	'time', &
	3336	values_realwp_0d = output_values_0d_pointer, &
[4447]	3337	bounds_start = (/t_ind/), &
[4411]	3338	bounds_end = (/t_ind/) )
	3339
[4423]	3340	DEALLOCATE ( output_values_1d_target )
[4411]	3341
[4423]	3342	ENDIF
[4411]	3343
	3344	END SUBROUTINE wtm_data_output
	3345
[1819]	3346	END MODULE wind_turbine_model_mod

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