[1682] | 1 | !> @file init_pt_anomaly.f90 |
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[2000] | 2 | !------------------------------------------------------------------------------! |
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[2696] | 3 | ! This file is part of the PALM model system. |
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[1036] | 4 | ! |
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[2000] | 5 | ! PALM is free software: you can redistribute it and/or modify it under the |
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| 6 | ! terms of the GNU General Public License as published by the Free Software |
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| 7 | ! Foundation, either version 3 of the License, or (at your option) any later |
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| 8 | ! version. |
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[1036] | 9 | ! |
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| 10 | ! PALM is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 11 | ! WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR |
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| 12 | ! A PARTICULAR PURPOSE. See the GNU General Public License for more details. |
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| 13 | ! |
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| 14 | ! You should have received a copy of the GNU General Public License along with |
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| 15 | ! PALM. If not, see <http://www.gnu.org/licenses/>. |
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| 16 | ! |
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[3655] | 17 | ! Copyright 1997-2019 Leibniz Universitaet Hannover |
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[2000] | 18 | !------------------------------------------------------------------------------! |
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[1036] | 19 | ! |
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[484] | 20 | ! Current revisions: |
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[1] | 21 | ! ----------------- |
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[1354] | 22 | ! |
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[2001] | 23 | ! |
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[1321] | 24 | ! Former revisions: |
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| 25 | ! ----------------- |
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| 26 | ! $Id: init_pt_anomaly.f90 4329 2019-12-10 15:46:36Z suehring $ |
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[4329] | 27 | ! Renamed wall_flags_0 to wall_flags_static_0 |
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| 28 | ! |
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| 29 | ! 4182 2019-08-22 15:20:23Z scharf |
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[4182] | 30 | ! Corrected "Former revisions" section |
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| 31 | ! |
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| 32 | ! 3655 2019-01-07 16:51:22Z knoop |
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[3379] | 33 | ! Added topography flags |
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[1321] | 34 | ! |
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[4182] | 35 | ! Revision 1.1 1997/08/29 08:58:56 raasch |
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| 36 | ! Initial revision |
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| 37 | ! |
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| 38 | ! |
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[1] | 39 | ! Description: |
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| 40 | ! ------------ |
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[1682] | 41 | !> Impose a temperature perturbation for an advection test. |
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[1] | 42 | !------------------------------------------------------------------------------! |
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[1682] | 43 | SUBROUTINE init_pt_anomaly |
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[1] | 44 | |
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[3379] | 45 | |
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[1320] | 46 | USE arrays_3d, & |
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| 47 | ONLY: pt, zu |
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[1] | 48 | |
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[3379] | 49 | USE control_parameters |
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| 50 | |
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[1320] | 51 | USE grid_variables, & |
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| 52 | ONLY: dx, dy |
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| 53 | |
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| 54 | USE indices, & |
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[4329] | 55 | ONLY: nbgp, nx, nxl, nxr, ny, nyn, nys, nzb, nzt, wall_flags_static_0 |
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[3379] | 56 | |
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[1320] | 57 | USE kinds |
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| 58 | |
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[1] | 59 | IMPLICIT NONE |
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| 60 | |
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[3035] | 61 | INTEGER(iwp) :: i !< grid index along x |
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| 62 | INTEGER(iwp) :: ic !< center index along x |
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| 63 | INTEGER(iwp) :: j !< grid index along y |
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| 64 | INTEGER(iwp) :: jc !< center index along y |
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| 65 | INTEGER(iwp) :: k !< grid index along z |
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| 66 | INTEGER(iwp) :: kc !< center index along z |
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[3379] | 67 | |
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[3035] | 68 | REAL(wp) :: amount !< amount of temperature perturbation |
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| 69 | REAL(wp) :: bubble_center_y !< center of bubble in y |
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| 70 | REAL(wp) :: bubble_center_z = 170.0 !< center of bubble in z |
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| 71 | REAL(wp) :: bubble_sigma_y = 300.0 !< width of bubble in y |
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| 72 | REAL(wp) :: bubble_sigma_z = 150.0 !< width of bubble in z |
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[3379] | 73 | REAL(wp) :: flag !< flag to mask topography grid points |
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[3035] | 74 | REAL(wp) :: initial_temperature_difference = 0.4 !< temperature perturbation for bubble in K |
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| 75 | REAL(wp) :: radius !< radius of pt anomaly |
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| 76 | REAL(wp) :: rc !< radius of pt anomaly |
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| 77 | REAL(wp) :: x !< x dimension of pt anomaly |
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| 78 | REAL(wp) :: y !< y dimension of pt anomaly |
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| 79 | REAL(wp) :: z !< z dimension of pt anomaly |
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[3379] | 80 | |
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| 81 | |
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[1] | 82 | ! |
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| 83 | !-- Defaults: radius rc, strength z, |
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[3035] | 84 | !-- position of center: ic, jc, kc |
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[1353] | 85 | rc = 10.0_wp * dx |
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[1] | 86 | ic = ( nx+1 ) / 2 |
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| 87 | jc = ic |
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[1353] | 88 | kc = nzt / 2 |
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[3379] | 89 | |
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[3035] | 90 | IF ( INDEX( initializing_actions, 'initialize_ptanom' ) /= 0 ) THEN |
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[1] | 91 | ! |
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[3035] | 92 | !-- Compute the perturbation. |
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| 93 | DO i = nxl, nxr |
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| 94 | DO j = nys, nyn |
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| 95 | DO k = nzb+1, nzt |
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[3379] | 96 | ! |
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| 97 | !-- Predetermine flag to mask topography |
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[4329] | 98 | flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_static_0(k,j,i), 0 ) ) |
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[3379] | 99 | |
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[3035] | 100 | x = ( i - ic ) * dx |
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| 101 | y = ( j - jc ) * dy |
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| 102 | z = ABS( zu(k) - zu(kc) ) |
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| 103 | radius = SQRT( x**2 + y**2 + z**2 ) |
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| 104 | IF ( radius <= rc ) THEN |
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| 105 | amount = 5.0_wp * EXP( -( radius * 0.001_wp / 2.0_wp )**2 ) |
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| 106 | ELSE |
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| 107 | amount = 0.0_wp |
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| 108 | ENDIF |
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[1] | 109 | |
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[3379] | 110 | pt(k,j,i) = pt(k,j,i) + amount * flag |
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[1] | 111 | |
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[3035] | 112 | ENDDO |
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[1] | 113 | ENDDO |
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| 114 | ENDDO |
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[3379] | 115 | |
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[3035] | 116 | ! |
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| 117 | !-- Initialize warm air bubble close to surface and homogenous elegonated |
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| 118 | !-- along x-Axis |
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| 119 | ELSEIF ( INDEX( initializing_actions, 'initialize_bubble' ) /= 0 ) THEN |
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| 120 | ! |
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| 121 | !-- Calculate y-center of model domain |
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| 122 | bubble_center_y = ( ny + 1.0 ) * dy / 2.0 |
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[3379] | 123 | |
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[3035] | 124 | ! |
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| 125 | !-- Compute perturbation for potential temperaure |
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| 126 | DO i = nxl, nxr |
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| 127 | DO j = nys, nyn |
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[3379] | 128 | DO k = nzb+1, nzt |
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| 129 | ! |
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| 130 | !-- Predetermine flag to mask topography |
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[4329] | 131 | flag = MERGE( 1.0_wp, 0.0_wp, BTEST( wall_flags_static_0(k,j,i), 0 ) ) |
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[3379] | 132 | |
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[3035] | 133 | pt(k,j,i) = pt(k,j,i) + & |
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| 134 | EXP( -0.5 * ( (j* dy - bubble_center_y) / & |
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| 135 | bubble_sigma_y )**2) * & |
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| 136 | EXP( -0.5 * ( (zu(k) - bubble_center_z) / & |
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| 137 | bubble_sigma_z)**2) * & |
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[3379] | 138 | initial_temperature_difference * flag |
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[3035] | 139 | ENDDO |
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| 140 | ENDDO |
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| 141 | ENDDO |
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| 142 | ENDIF |
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[1] | 143 | |
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| 144 | ! |
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| 145 | !-- Exchange of boundary values for temperature |
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[667] | 146 | CALL exchange_horiz( pt, nbgp ) |
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[1] | 147 | |
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| 148 | |
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| 149 | END SUBROUTINE init_pt_anomaly |
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