[1682] | 1 | !> @file init_slope.f90 |
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[1036] | 2 | !--------------------------------------------------------------------------------! |
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| 3 | ! This file is part of PALM. |
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| 4 | ! |
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| 5 | ! PALM is free software: you can redistribute it and/or modify it under the terms |
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| 6 | ! of the GNU General Public License as published by the Free Software Foundation, |
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| 7 | ! either version 3 of the License, or (at your option) any later version. |
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| 8 | ! |
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| 9 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 10 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 11 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 12 | ! |
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| 13 | ! You should have received a copy of the GNU General Public License along with |
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| 14 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 15 | ! |
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[1310] | 16 | ! Copyright 1997-2014 Leibniz Universitaet Hannover |
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[1036] | 17 | !--------------------------------------------------------------------------------! |
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| 18 | ! |
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[484] | 19 | ! Current revisions: |
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[1] | 20 | ! ----------------- |
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[1354] | 21 | ! |
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[1683] | 22 | ! |
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[1321] | 23 | ! Former revisions: |
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| 24 | ! ----------------- |
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| 25 | ! $Id: init_slope.f90 1683 2015-10-07 23:57:51Z knoop $ |
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| 26 | ! |
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[1683] | 27 | ! 1682 2015-10-07 23:56:08Z knoop |
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| 28 | ! Code annotations made doxygen readable |
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| 29 | ! |
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[1354] | 30 | ! 1353 2014-04-08 15:21:23Z heinze |
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| 31 | ! REAL constants provided with KIND-attribute |
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| 32 | ! |
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[1323] | 33 | ! 1322 2014-03-20 16:38:49Z raasch |
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| 34 | ! REAL constants defined as wp_kind |
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| 35 | ! |
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[1321] | 36 | ! 1320 2014-03-20 08:40:49Z raasch |
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[1320] | 37 | ! ONLY-attribute added to USE-statements, |
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| 38 | ! kind-parameters added to all INTEGER and REAL declaration statements, |
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| 39 | ! kinds are defined in new module kinds, |
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| 40 | ! revision history before 2012 removed, |
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| 41 | ! comment fields (!:) to be used for variable explanations added to |
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| 42 | ! all variable declaration statements |
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[1] | 43 | ! |
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[1037] | 44 | ! 1036 2012-10-22 13:43:42Z raasch |
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| 45 | ! code put under GPL (PALM 3.9) |
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| 46 | ! |
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[1] | 47 | ! Revision 1.1 2000/04/27 07:06:24 raasch |
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| 48 | ! Initial revision |
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| 49 | ! |
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| 50 | ! |
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| 51 | ! Description: |
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| 52 | ! ------------ |
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[1682] | 53 | !> Initialization of the temperature field and other variables used in case |
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| 54 | !> of a sloping surface. |
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| 55 | !> @note when a sloping surface is used, only one constant temperature |
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| 56 | !> gradient is allowed! |
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[3] | 57 | !------------------------------------------------------------------------------! |
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[1682] | 58 | SUBROUTINE init_slope |
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| 59 | |
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[1] | 60 | |
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[1320] | 61 | USE arrays_3d, & |
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| 62 | ONLY: pt, pt_init, pt_slope_ref, zu |
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| 63 | |
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| 64 | USE constants, & |
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| 65 | ONLY: pi |
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| 66 | |
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| 67 | USE control_parameters, & |
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| 68 | ONLY: alpha_surface, initializing_actions, pt_slope_offset, & |
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| 69 | pt_surface, pt_vertical_gradient, sin_alpha_surface |
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| 70 | |
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| 71 | USE grid_variables, & |
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| 72 | ONLY: dx |
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| 73 | |
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| 74 | USE indices, & |
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| 75 | ONLY: ngp_2dh, nx, nxl, nxlg, nxr, nxrg, nyn, nyng, nys, nysg, nzb, nzt |
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| 76 | |
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| 77 | USE kinds |
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| 78 | |
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[1] | 79 | USE pegrid |
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| 80 | |
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[1320] | 81 | |
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[1] | 82 | IMPLICIT NONE |
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| 83 | |
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[1682] | 84 | INTEGER(iwp) :: i !< |
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| 85 | INTEGER(iwp) :: j !< |
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| 86 | INTEGER(iwp) :: k !< |
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[1320] | 87 | |
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[1682] | 88 | REAL(wp) :: alpha !< |
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| 89 | REAL(wp) :: height !< |
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| 90 | REAL(wp) :: pt_value !< |
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| 91 | REAL(wp) :: radius !< |
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[1320] | 92 | |
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[1682] | 93 | REAL(wp), DIMENSION(:), ALLOCATABLE :: pt_init_local !< |
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[1] | 94 | |
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| 95 | ! |
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| 96 | !-- Calculate reference temperature field needed for computing buoyancy |
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[667] | 97 | ALLOCATE( pt_slope_ref(nzb:nzt+1,nxlg:nxrg) ) |
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[1] | 98 | |
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[667] | 99 | DO i = nxlg, nxrg |
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[1] | 100 | DO k = nzb, nzt+1 |
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| 101 | |
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| 102 | ! |
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| 103 | !-- Compute height of grid-point relative to lower left corner of |
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| 104 | !-- the total domain. |
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| 105 | !-- First compute the distance between the actual grid point and the |
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| 106 | !-- lower left corner as well as the angle between the line connecting |
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| 107 | !-- these points and the bottom of the model. |
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| 108 | IF ( k /= nzb ) THEN |
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| 109 | radius = SQRT( ( i * dx )**2 + zu(k)**2 ) |
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| 110 | height = zu(k) |
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| 111 | ELSE |
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| 112 | radius = SQRT( ( i * dx )**2 ) |
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[1353] | 113 | height = 0.0_wp |
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[1] | 114 | ENDIF |
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[1353] | 115 | IF ( radius /= 0.0_wp ) THEN |
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[1] | 116 | alpha = ASIN( height / radius ) |
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| 117 | ELSE |
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[1353] | 118 | alpha = 0.0_wp |
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[1] | 119 | ENDIF |
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| 120 | ! |
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| 121 | !-- Compute temperatures in the rotated coordinate system |
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[1322] | 122 | alpha = alpha + alpha_surface / 180.0_wp * pi |
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[1] | 123 | pt_value = pt_surface + radius * SIN( alpha ) * & |
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[1322] | 124 | pt_vertical_gradient(1) / 100.0_wp |
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[1] | 125 | pt_slope_ref(k,i) = pt_value |
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| 126 | ENDDO |
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| 127 | ENDDO |
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| 128 | |
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| 129 | ! |
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| 130 | !-- Temperature difference between left and right boundary of the total domain, |
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| 131 | !-- used for the cyclic boundary in x-direction |
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| 132 | pt_slope_offset = (nx+1) * dx * sin_alpha_surface * & |
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[1322] | 133 | pt_vertical_gradient(1) / 100.0_wp |
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[1] | 134 | |
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| 135 | |
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| 136 | ! |
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| 137 | !-- Following action must only be executed for initial runs |
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| 138 | IF ( TRIM( initializing_actions ) /= 'read_restart_data' ) THEN |
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| 139 | ! |
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| 140 | !-- Set initial temperature equal to the reference temperature field |
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[667] | 141 | DO j = nysg, nyng |
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[1] | 142 | pt(:,j,:) = pt_slope_ref |
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| 143 | ENDDO |
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| 144 | |
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| 145 | ! |
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| 146 | !-- Recompute the mean initial temperature profile (mean along x-direction of |
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| 147 | !-- the rotated coordinate system) |
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| 148 | ALLOCATE( pt_init_local(nzb:nzt+1) ) |
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[1353] | 149 | pt_init_local = 0.0_wp |
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[1] | 150 | DO i = nxl, nxr |
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| 151 | DO j = nys, nyn |
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| 152 | DO k = nzb, nzt+1 |
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| 153 | pt_init_local(k) = pt_init_local(k) + pt(k,j,i) |
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| 154 | ENDDO |
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| 155 | ENDDO |
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[622] | 156 | ENDDO |
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[1] | 157 | |
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| 158 | #if defined( __parallel ) |
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[622] | 159 | IF ( collective_wait ) CALL MPI_BARRIER( comm2d, ierr ) |
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| 160 | CALL MPI_ALLREDUCE( pt_init_local, pt_init, nzt+2-nzb, MPI_REAL, & |
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| 161 | MPI_SUM, comm2d, ierr ) |
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[1] | 162 | #else |
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[622] | 163 | pt_init = pt_init_local |
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[1] | 164 | #endif |
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| 165 | |
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[622] | 166 | pt_init = pt_init / ngp_2dh(0) |
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| 167 | DEALLOCATE( pt_init_local ) |
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[1] | 168 | |
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[622] | 169 | ENDIF |
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[1] | 170 | |
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| 171 | END SUBROUTINE init_slope |
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