!> @file buoyancy.f90 !------------------------------------------------------------------------------! ! This file is part of the PALM model system. ! ! PALM is free software: you can redistribute it and/or modify it under the ! terms of the GNU General Public License as published by the Free Software ! Foundation, either version 3 of the License, or (at your option) any later ! version. ! ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. ! ! You should have received a copy of the GNU General Public License along with ! PALM. If not, see . ! ! Copyright 1997-2019 Leibniz Universitaet Hannover !------------------------------------------------------------------------------! ! ! Current revisions: ! ------------------ ! ! ! Former revisions: ! ----------------- ! $Id: buoyancy.f90 3655 2019-01-07 16:51:22Z gronemeier $ ! nopointer option removed ! ! 3634 2018-12-18 12:31:28Z knoop ! OpenACC port for SPEC ! ! 3538 2018-11-20 10:55:41Z suehring ! Remove unnecessary double-masking of topography ! ! 3294 2018-10-01 02:37:10Z raasch ! module use statements moved to global declaration section ! ! 3274 2018-09-24 15:42:55Z knoop ! Modularization of all bulk cloud physics code components ! ! 3241 2018-09-12 15:02:00Z raasch ! unused Variable removed ! ! 2718 2018-01-02 08:49:38Z maronga ! Corrected "Former revisions" section ! ! 2696 2017-12-14 17:12:51Z kanani ! Change in file header (GPL part) ! ! 2233 2017-05-30 18:08:54Z suehring ! ! 2232 2017-05-30 17:47:52Z suehring ! Adjustments to new topography concept ! ! 2118 2017-01-17 16:38:49Z raasch ! OpenACC version of subroutine removed ! ! 2000 2016-08-20 18:09:15Z knoop ! Forced header and separation lines into 80 columns ! ! 1873 2016-04-18 14:50:06Z maronga ! Module renamed (removed _mod) ! ! ! 1850 2016-04-08 13:29:27Z maronga ! Module renamed ! ! 1682 2015-10-07 23:56:08Z knoop ! Code annotations made doxygen readable ! ! 1374 2014-04-25 12:55:07Z raasch ! missing variables added to ONLY list ! ! 1365 2014-04-22 15:03:56Z boeske ! Calculation of reference state in subroutine calc_mean_profile moved to ! subroutine time_integration, ! subroutine calc_mean_profile moved to new file calc_mean_profile.f90 ! ! 1353 2014-04-08 15:21:23Z heinze ! REAL constants provided with KIND-attribute ! ! 1320 2014-03-20 08:40:49Z raasch ! ONLY-attribute added to USE-statements, ! kind-parameters added to all INTEGER and REAL declaration statements, ! kinds are defined in new module kinds, ! revision history before 2012 removed, ! comment fields (!:) to be used for variable explanations added to ! all variable declaration statements ! ! 1257 2013-11-08 15:18:40Z raasch ! vector length (32) removed from openacc clause ! ! 1241 2013-10-30 11:36:58Z heinze ! Generalize calc_mean_profile for wider use: use additional steering ! character loc ! ! 1179 2013-06-14 05:57:58Z raasch ! steering of reference state revised (var_reference and pr removed from ! parameter list), use_reference renamed use_single_reference_value ! ! 1171 2013-05-30 11:27:45Z raasch ! openacc statements added to use_reference-case in accelerator version ! ! 1153 2013-05-10 14:33:08Z raasch ! code adjustments of accelerator version required by PGI 12.3 / CUDA 5.0 ! ! 1128 2013-04-12 06:19:32Z raasch ! loop index bounds in accelerator version replaced by i_left, i_right, j_south, ! j_north ! ! 1036 2012-10-22 13:43:42Z raasch ! code put under GPL (PALM 3.9) ! ! 1015 2012-09-27 09:23:24Z raasch ! accelerator version (*_acc) added ! ! 1010 2012-09-20 07:59:54Z raasch ! cpp switch __nopointer added for pointer free version ! ! Revision 1.1 1997/08/29 08:56:48 raasch ! Initial revision ! ! ! Description: ! ------------ !> Buoyancy term of the third component of the equation of motion. !> @attention Humidity is not regarded when using a sloping surface! !------------------------------------------------------------------------------! MODULE buoyancy_mod USE basic_constants_and_equations_mod, & ONLY: g USE arrays_3d, & ONLY: pt, pt_slope_ref, ref_state, tend USE control_parameters, & ONLY: atmos_ocean_sign, cos_alpha_surface, message_string, pt_surface,& sin_alpha_surface, sloping_surface USE kinds PRIVATE PUBLIC buoyancy INTERFACE buoyancy MODULE PROCEDURE buoyancy MODULE PROCEDURE buoyancy_ij END INTERFACE buoyancy CONTAINS !------------------------------------------------------------------------------! ! Description: ! ------------ !> Call for all grid points !------------------------------------------------------------------------------! SUBROUTINE buoyancy( var, wind_component ) USE indices, & ONLY: nxl, nxlg, nxlu, nxr, nxrg, nyn, nyng, nys, nysg, nzb, & nzt IMPLICIT NONE INTEGER(iwp) :: i !< INTEGER(iwp) :: j !< INTEGER(iwp) :: k !< INTEGER(iwp) :: wind_component !< REAL(wp), DIMENSION(:,:,:), POINTER :: var IF ( .NOT. sloping_surface ) THEN ! !-- Normal case: horizontal surface !$ACC PARALLEL LOOP COLLAPSE(3) PRIVATE(i, j, k) & !$ACC PRESENT(var) & !$ACC PRESENT(ref_state) & !$ACC PRESENT(tend) DO i = nxl, nxr DO j = nys, nyn DO k = nzb+1, nzt-1 tend(k,j,i) = tend(k,j,i) + atmos_ocean_sign * g * 0.5_wp * & ( & ( var(k,j,i) - ref_state(k) ) / ref_state(k) + & ( var(k+1,j,i) - ref_state(k+1) ) / ref_state(k+1) & ) ENDDO ENDDO ENDDO ELSE ! !-- Buoyancy term for a surface with a slope in x-direction. The equations !-- for both the u and w velocity-component contain proportionate terms. !-- Temperature field at time t=0 serves as environmental temperature. !-- Reference temperature (pt_surface) is the one at the lower left corner !-- of the total domain. IF ( wind_component == 1 ) THEN DO i = nxlu, nxr DO j = nys, nyn DO k = nzb+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * sin_alpha_surface * & 0.5_wp * ( ( pt(k,j,i-1) + pt(k,j,i) ) & - ( pt_slope_ref(k,i-1) + pt_slope_ref(k,i) ) & ) / pt_surface ENDDO ENDDO ENDDO ELSEIF ( wind_component == 3 ) THEN DO i = nxl, nxr DO j = nys, nyn DO k = nzb+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * cos_alpha_surface * & 0.5_wp * ( ( pt(k,j,i) + pt(k+1,j,i) ) & - ( pt_slope_ref(k,i) + pt_slope_ref(k+1,i) ) & ) / pt_surface ENDDO ENDDO ENDDO ELSE WRITE( message_string, * ) 'no term for component "', & wind_component,'"' CALL message( 'buoyancy', 'PA0159', 1, 2, 0, 6, 0 ) ENDIF ENDIF END SUBROUTINE buoyancy !------------------------------------------------------------------------------! ! Description: ! ------------ !> Call for grid point i,j !> @attention PGI-compiler creates SIGFPE if opt>1 is used! Therefore, opt=1 is !> forced by compiler-directive. !------------------------------------------------------------------------------! !pgi$r opt=1 SUBROUTINE buoyancy_ij( i, j, var, wind_component ) USE indices, & ONLY: nxlg, nxrg, nyng, nysg, nzb, nzt IMPLICIT NONE INTEGER(iwp) :: i !< INTEGER(iwp) :: j !< INTEGER(iwp) :: k !< INTEGER(iwp) :: wind_component !< REAL(wp), DIMENSION(:,:,:), POINTER :: var IF ( .NOT. sloping_surface ) THEN ! !-- Normal case: horizontal surface DO k = nzb+1, nzt-1 tend(k,j,i) = tend(k,j,i) + atmos_ocean_sign * g * 0.5_wp * ( & ( var(k,j,i) - ref_state(k) ) / ref_state(k) + & ( var(k+1,j,i) - ref_state(k+1) ) / ref_state(k+1) & ) ENDDO ELSE ! !-- Buoyancy term for a surface with a slope in x-direction. The equations !-- for both the u and w velocity-component contain proportionate terms. !-- Temperature field at time t=0 serves as environmental temperature. !-- Reference temperature (pt_surface) is the one at the lower left corner !-- of the total domain. IF ( wind_component == 1 ) THEN DO k = nzb+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * sin_alpha_surface * & 0.5_wp * ( ( pt(k,j,i-1) + pt(k,j,i) ) & - ( pt_slope_ref(k,i-1) + pt_slope_ref(k,i) ) & ) / pt_surface ENDDO ELSEIF ( wind_component == 3 ) THEN DO k = nzb+1, nzt-1 tend(k,j,i) = tend(k,j,i) + g * cos_alpha_surface * & 0.5_wp * ( ( pt(k,j,i) + pt(k+1,j,i) ) & - ( pt_slope_ref(k,i) + pt_slope_ref(k+1,i) ) & ) / pt_surface ENDDO ELSE WRITE( message_string, * ) 'no term for component "', & wind_component,'"' CALL message( 'buoyancy', 'PA0159', 1, 2, 0, 6, 0 ) ENDIF ENDIF END SUBROUTINE buoyancy_ij END MODULE buoyancy_mod