| 1 | MODULE diffusion_e_mod |
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| 2 | |
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| 3 | !------------------------------------------------------------------------------! |
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| 4 | ! Current revisions: |
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| 5 | ! ----------------- |
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| 6 | ! |
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| 7 | ! |
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| 8 | ! Former revisions: |
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| 9 | ! ----------------- |
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| 10 | ! $Id: diffusion_e.f90 1017 2012-09-27 11:28:50Z letzel $ |
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| 11 | ! |
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| 12 | ! 1015 2012-09-27 09:23:24Z raasch |
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| 13 | ! accelerator version (*_acc) added, |
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| 14 | ! adjustment of mixing length to the Prandtl mixing length at first grid point |
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| 15 | ! above ground removed |
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| 16 | ! |
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| 17 | ! 1010 2012-09-20 07:59:54Z raasch |
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| 18 | ! cpp switch __nopointer added for pointer free version |
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| 19 | ! |
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| 20 | ! 1001 2012-09-13 14:08:46Z raasch |
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| 21 | ! most arrays comunicated by module instead of parameter list |
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| 22 | ! |
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| 23 | ! 825 2012-02-19 03:03:44Z raasch |
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| 24 | ! wang_collision_kernel renamed wang_kernel |
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| 25 | ! |
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| 26 | ! 790 2011-11-29 03:11:20Z raasch |
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| 27 | ! diss is also calculated in case that the Wang kernel is used |
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| 28 | ! |
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| 29 | ! 667 2010-12-23 12:06:00Z suehring/gryschka |
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| 30 | ! nxl-1, nxr+1, nys-1, nyn+1 replaced by nxlg, nxrg, nysg, nyng |
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| 31 | ! |
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| 32 | ! 97 2007-06-21 08:23:15Z raasch |
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| 33 | ! Adjustment of mixing length calculation for the ocean version. zw added to |
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| 34 | ! argument list. |
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| 35 | ! This is also a bugfix, because the height above the topography is now |
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| 36 | ! used instead of the height above level k=0. |
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| 37 | ! theta renamed var, dpt_dz renamed dvar_dz, +new argument var_reference |
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| 38 | ! use_pt_reference renamed use_reference |
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| 39 | ! |
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| 40 | ! 65 2007-03-13 12:11:43Z raasch |
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| 41 | ! Reference temperature pt_reference can be used in buoyancy term |
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| 42 | ! |
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| 43 | ! 20 2007-02-26 00:12:32Z raasch |
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| 44 | ! Bugfix: ddzw dimensioned 1:nzt"+1" |
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| 45 | ! Calculation extended for gridpoint nzt |
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| 46 | ! |
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| 47 | ! RCS Log replace by Id keyword, revision history cleaned up |
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| 48 | ! |
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| 49 | ! Revision 1.18 2006/08/04 14:29:43 raasch |
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| 50 | ! dissipation is stored in extra array diss if needed later on for calculating |
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| 51 | ! the sgs particle velocities |
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| 52 | ! |
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| 53 | ! Revision 1.1 1997/09/19 07:40:24 raasch |
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| 54 | ! Initial revision |
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| 55 | ! |
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| 56 | ! |
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| 57 | ! Description: |
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| 58 | ! ------------ |
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| 59 | ! Diffusion- and dissipation terms for the TKE |
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| 60 | !------------------------------------------------------------------------------! |
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| 61 | |
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| 62 | PRIVATE |
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| 63 | PUBLIC diffusion_e, diffusion_e_acc |
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| 64 | |
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| 65 | |
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| 66 | INTERFACE diffusion_e |
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| 67 | MODULE PROCEDURE diffusion_e |
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| 68 | MODULE PROCEDURE diffusion_e_ij |
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| 69 | END INTERFACE diffusion_e |
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| 70 | |
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| 71 | INTERFACE diffusion_e_acc |
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| 72 | MODULE PROCEDURE diffusion_e_acc |
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| 73 | END INTERFACE diffusion_e_acc |
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| 74 | |
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| 75 | CONTAINS |
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| 76 | |
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| 77 | |
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| 78 | !------------------------------------------------------------------------------! |
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| 79 | ! Call for all grid points |
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| 80 | !------------------------------------------------------------------------------! |
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| 81 | SUBROUTINE diffusion_e( var, var_reference ) |
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| 82 | |
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| 83 | USE arrays_3d |
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| 84 | USE control_parameters |
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| 85 | USE grid_variables |
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| 86 | USE indices |
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| 87 | USE particle_attributes |
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| 88 | |
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| 89 | IMPLICIT NONE |
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| 90 | |
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| 91 | INTEGER :: i, j, k |
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| 92 | REAL :: dvar_dz, l_stable, var_reference |
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| 93 | |
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| 94 | #if defined( __nopointer ) |
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| 95 | REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var |
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| 96 | #else |
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| 97 | REAL, DIMENSION(:,:,:), POINTER :: var |
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| 98 | #endif |
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| 99 | REAL, DIMENSION(nzb+1:nzt,nys:nyn) :: dissipation, l, ll |
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| 100 | |
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| 101 | |
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| 102 | ! |
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| 103 | !-- This if clause must be outside the k-loop because otherwise |
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| 104 | !-- runtime errors occur with -C hopt on NEC |
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| 105 | IF ( use_reference ) THEN |
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| 106 | |
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| 107 | DO i = nxl, nxr |
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| 108 | DO j = nys, nyn |
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| 109 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 110 | ! |
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| 111 | !-- Calculate the mixing length (for dissipation) |
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| 112 | dvar_dz = atmos_ocean_sign * & |
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| 113 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 114 | IF ( dvar_dz > 0.0 ) THEN |
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| 115 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 116 | SQRT( g / var_reference * dvar_dz ) + 1E-5 |
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| 117 | ELSE |
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| 118 | l_stable = l_grid(k) |
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| 119 | ENDIF |
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| 120 | ! |
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| 121 | !-- Adjustment of the mixing length |
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| 122 | IF ( wall_adjustment ) THEN |
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| 123 | l(k,j) = MIN( wall_adjustment_factor * & |
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| 124 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 125 | l_grid(k), l_stable ) |
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| 126 | ll(k,j) = MIN( wall_adjustment_factor * & |
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| 127 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 128 | l_grid(k) ) |
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| 129 | ELSE |
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| 130 | l(k,j) = MIN( l_grid(k), l_stable ) |
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| 131 | ll(k,j) = l_grid(k) |
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| 132 | ENDIF |
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| 133 | |
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| 134 | ENDDO |
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| 135 | ENDDO |
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| 136 | |
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| 137 | ! |
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| 138 | !-- Calculate the tendency terms |
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| 139 | DO j = nys, nyn |
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| 140 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 141 | |
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| 142 | dissipation(k,j) = ( 0.19 + 0.74 * l(k,j) / ll(k,j) ) * & |
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| 143 | e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j) |
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| 144 | |
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| 145 | tend(k,j,i) = tend(k,j,i) & |
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| 146 | + ( & |
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| 147 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 148 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 149 | ) * ddx2 & |
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| 150 | + ( & |
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| 151 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 152 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 153 | ) * ddy2 & |
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| 154 | + ( & |
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| 155 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 156 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 157 | ) * ddzw(k) & |
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| 158 | - dissipation(k,j) |
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| 159 | |
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| 160 | ENDDO |
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| 161 | ENDDO |
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| 162 | |
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| 163 | ! |
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| 164 | !-- Store dissipation if needed for calculating the sgs particle |
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| 165 | !-- velocities |
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| 166 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 167 | DO j = nys, nyn |
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| 168 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 169 | diss(k,j,i) = dissipation(k,j) |
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| 170 | ENDDO |
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| 171 | ENDDO |
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| 172 | ENDIF |
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| 173 | |
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| 174 | ENDDO |
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| 175 | |
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| 176 | ELSE |
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| 177 | |
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| 178 | DO i = nxl, nxr |
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| 179 | DO j = nys, nyn |
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| 180 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 181 | ! |
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| 182 | !-- Calculate the mixing length (for dissipation) |
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| 183 | dvar_dz = atmos_ocean_sign * & |
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| 184 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 185 | IF ( dvar_dz > 0.0 ) THEN |
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| 186 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 187 | SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5 |
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| 188 | ELSE |
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| 189 | l_stable = l_grid(k) |
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| 190 | ENDIF |
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| 191 | ! |
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| 192 | !-- Adjustment of the mixing length |
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| 193 | IF ( wall_adjustment ) THEN |
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| 194 | l(k,j) = MIN( wall_adjustment_factor * & |
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| 195 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 196 | l_grid(k), l_stable ) |
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| 197 | ll(k,j) = MIN( wall_adjustment_factor * & |
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| 198 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 199 | l_grid(k) ) |
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| 200 | ELSE |
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| 201 | l(k,j) = MIN( l_grid(k), l_stable ) |
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| 202 | ll(k,j) = l_grid(k) |
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| 203 | ENDIF |
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| 204 | |
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| 205 | ENDDO |
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| 206 | ENDDO |
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| 207 | |
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| 208 | ! |
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| 209 | !-- Calculate the tendency terms |
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| 210 | DO j = nys, nyn |
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| 211 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 212 | |
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| 213 | dissipation(k,j) = ( 0.19 + 0.74 * l(k,j) / ll(k,j) ) * & |
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| 214 | e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j) |
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| 215 | |
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| 216 | tend(k,j,i) = tend(k,j,i) & |
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| 217 | + ( & |
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| 218 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 219 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 220 | ) * ddx2 & |
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| 221 | + ( & |
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| 222 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 223 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 224 | ) * ddy2 & |
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| 225 | + ( & |
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| 226 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 227 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 228 | ) * ddzw(k) & |
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| 229 | - dissipation(k,j) |
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| 230 | |
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| 231 | ENDDO |
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| 232 | ENDDO |
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| 233 | |
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| 234 | ! |
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| 235 | !-- Store dissipation if needed for calculating the sgs particle |
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| 236 | !-- velocities |
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| 237 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 238 | DO j = nys, nyn |
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| 239 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 240 | diss(k,j,i) = dissipation(k,j) |
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| 241 | ENDDO |
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| 242 | ENDDO |
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| 243 | ENDIF |
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| 244 | |
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| 245 | ENDDO |
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| 246 | |
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| 247 | ENDIF |
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| 248 | |
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| 249 | ! |
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| 250 | !-- Boundary condition for dissipation |
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| 251 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 252 | DO i = nxl, nxr |
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| 253 | DO j = nys, nyn |
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| 254 | diss(nzb_s_inner(j,i),j,i) = diss(nzb_s_inner(j,i)+1,j,i) |
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| 255 | ENDDO |
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| 256 | ENDDO |
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| 257 | ENDIF |
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| 258 | |
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| 259 | END SUBROUTINE diffusion_e |
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| 260 | |
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| 261 | |
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| 262 | !------------------------------------------------------------------------------! |
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| 263 | ! Call for all grid points - accelerator version |
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| 264 | !------------------------------------------------------------------------------! |
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| 265 | SUBROUTINE diffusion_e_acc( var, var_reference ) |
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| 266 | |
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| 267 | USE arrays_3d |
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| 268 | USE control_parameters |
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| 269 | USE grid_variables |
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| 270 | USE indices |
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| 271 | USE particle_attributes |
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| 272 | |
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| 273 | IMPLICIT NONE |
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| 274 | |
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| 275 | INTEGER :: i, j, k |
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| 276 | REAL :: dissipation, dvar_dz, l, ll, l_stable, var_reference |
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| 277 | |
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| 278 | #if defined( __nopointer ) |
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| 279 | REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var |
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| 280 | #else |
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| 281 | REAL, DIMENSION(:,:,:), POINTER :: var |
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| 282 | #endif |
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| 283 | |
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| 284 | |
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| 285 | ! |
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| 286 | !-- This if clause must be outside the k-loop because otherwise |
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| 287 | !-- runtime errors occur with -C hopt on NEC |
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| 288 | IF ( use_reference ) THEN |
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| 289 | STOP '+++ use_reference in diffusion_e not implemented' |
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| 290 | ! DO i = nxl, nxr |
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| 291 | ! DO j = nys, nyn |
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| 292 | ! DO k = nzb_s_inner(j,i)+1, nzt |
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| 293 | ! |
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| 294 | !-- Calculate the mixing length (for dissipation) |
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| 295 | ! dvar_dz = atmos_ocean_sign * & |
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| 296 | ! ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 297 | ! IF ( dvar_dz > 0.0 ) THEN |
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| 298 | ! l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 299 | ! SQRT( g / var_reference * dvar_dz ) + 1E-5 |
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| 300 | ! ELSE |
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| 301 | ! l_stable = l_grid(k) |
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| 302 | ! ENDIF |
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| 303 | ! |
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| 304 | !-- Adjustment of the mixing length |
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| 305 | ! IF ( wall_adjustment ) THEN |
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| 306 | ! l(k,j) = MIN( wall_adjustment_factor * & |
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| 307 | ! ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 308 | ! l_grid(k), l_stable ) |
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| 309 | ! ll(k,j) = MIN( wall_adjustment_factor * & |
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| 310 | ! ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 311 | ! l_grid(k) ) |
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| 312 | ! ELSE |
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| 313 | ! l(k,j) = MIN( l_grid(k), l_stable ) |
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| 314 | ! ll(k,j) = l_grid(k) |
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| 315 | ! ENDIF |
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| 316 | ! |
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| 317 | ! ENDDO |
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| 318 | ! ENDDO |
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| 319 | ! |
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| 320 | ! |
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| 321 | !-- Calculate the tendency terms |
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| 322 | ! DO j = nys, nyn |
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| 323 | ! DO k = nzb_s_inner(j,i)+1, nzt |
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| 324 | ! |
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| 325 | ! dissipation(k,j) = ( 0.19 + 0.74 * l(k,j) / ll(k,j) ) * & |
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| 326 | ! e(k,j,i) * SQRT( e(k,j,i) ) / l(k,j) |
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| 327 | ! |
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| 328 | ! tend(k,j,i) = tend(k,j,i) & |
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| 329 | ! + ( & |
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| 330 | ! ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 331 | ! - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 332 | ! ) * ddx2 & |
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| 333 | ! + ( & |
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| 334 | ! ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 335 | ! - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 336 | ! ) * ddy2 & |
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| 337 | ! + ( & |
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| 338 | ! ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 339 | ! - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 340 | ! ) * ddzw(k) & |
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| 341 | ! - dissipation(k,j) |
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| 342 | ! |
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| 343 | ! ENDDO |
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| 344 | ! ENDDO |
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| 345 | ! |
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| 346 | ! |
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| 347 | !-- Store dissipation if needed for calculating the sgs particle |
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| 348 | !-- velocities |
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| 349 | ! IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 350 | ! DO j = nys, nyn |
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| 351 | ! DO k = nzb_s_inner(j,i)+1, nzt |
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| 352 | ! diss(k,j,i) = dissipation(k,j) |
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| 353 | ! ENDDO |
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| 354 | ! ENDDO |
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| 355 | ! ENDIF |
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| 356 | ! |
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| 357 | ! ENDDO |
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| 358 | ! |
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| 359 | ELSE |
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| 360 | |
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| 361 | !$acc kernels present( ddzu, ddzw, dd2zu, diss, e, km, l_grid ) & |
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| 362 | !$acc present( nzb_s_inner, rif, tend, var, zu, zw ) |
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| 363 | !$acc loop |
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| 364 | DO i = nxl, nxr |
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| 365 | DO j = nys, nyn |
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| 366 | !$acc loop vector( 32 ) |
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| 367 | DO k = 1, nzt |
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| 368 | |
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| 369 | IF ( k > nzb_s_inner(j,i) ) THEN |
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| 370 | ! |
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| 371 | !-- Calculate the mixing length (for dissipation) |
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| 372 | dvar_dz = atmos_ocean_sign * & |
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| 373 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 374 | IF ( dvar_dz > 0.0 ) THEN |
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| 375 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 376 | SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5 |
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| 377 | ELSE |
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| 378 | l_stable = l_grid(k) |
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| 379 | ENDIF |
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| 380 | ! |
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| 381 | !-- Adjustment of the mixing length |
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| 382 | IF ( wall_adjustment ) THEN |
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| 383 | l = MIN( wall_adjustment_factor * & |
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| 384 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 385 | l_grid(k), l_stable ) |
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| 386 | ll = MIN( wall_adjustment_factor * & |
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| 387 | ( zu(k) - zw(nzb_s_inner(j,i)) ), & |
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| 388 | l_grid(k) ) |
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| 389 | ELSE |
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| 390 | l = MIN( l_grid(k), l_stable ) |
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| 391 | ll = l_grid(k) |
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| 392 | ENDIF |
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| 393 | ! |
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| 394 | !-- Calculate the tendency terms |
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| 395 | dissipation = ( 0.19 + 0.74 * l / ll ) * & |
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| 396 | e(k,j,i) * SQRT( e(k,j,i) ) / l |
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| 397 | |
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| 398 | tend(k,j,i) = tend(k,j,i) & |
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| 399 | + ( & |
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| 400 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 401 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 402 | ) * ddx2 & |
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| 403 | + ( & |
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| 404 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 405 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 406 | ) * ddy2 & |
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| 407 | + ( & |
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| 408 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 409 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 410 | ) * ddzw(k) & |
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| 411 | - dissipation |
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| 412 | |
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| 413 | ! |
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| 414 | !-- Store dissipation if needed for calculating the sgs |
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| 415 | !-- particle velocities |
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| 416 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 417 | diss(k,j,i) = dissipation |
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| 418 | ENDIF |
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| 419 | |
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| 420 | ENDIF |
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| 421 | |
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| 422 | ENDDO |
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| 423 | ENDDO |
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| 424 | ENDDO |
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| 425 | !$acc end kernels |
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| 426 | |
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| 427 | ENDIF |
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| 428 | |
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| 429 | ! |
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| 430 | !-- Boundary condition for dissipation |
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| 431 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 432 | !$acc kernels present( diss, nzb_s_inner ) |
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| 433 | !$acc loop |
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| 434 | DO i = nxl, nxr |
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| 435 | !$acc loop vector( 32 ) |
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| 436 | DO j = nys, nyn |
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| 437 | diss(nzb_s_inner(j,i),j,i) = diss(nzb_s_inner(j,i)+1,j,i) |
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| 438 | ENDDO |
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| 439 | ENDDO |
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| 440 | !$acc end kernels |
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| 441 | ENDIF |
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| 442 | |
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| 443 | END SUBROUTINE diffusion_e_acc |
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| 444 | |
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| 445 | |
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| 446 | !------------------------------------------------------------------------------! |
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| 447 | ! Call for grid point i,j |
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| 448 | !------------------------------------------------------------------------------! |
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| 449 | SUBROUTINE diffusion_e_ij( i, j, var, var_reference ) |
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| 450 | |
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| 451 | USE arrays_3d |
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| 452 | USE control_parameters |
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| 453 | USE grid_variables |
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| 454 | USE indices |
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| 455 | USE particle_attributes |
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| 456 | |
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| 457 | IMPLICIT NONE |
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| 458 | |
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| 459 | INTEGER :: i, j, k |
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| 460 | REAL :: dvar_dz, l_stable, var_reference |
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| 461 | |
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| 462 | #if defined( __nopointer ) |
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| 463 | REAL, DIMENSION(nzb:nzt+1,nysg:nyng,nxlg:nxrg) :: var |
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| 464 | #else |
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| 465 | REAL, DIMENSION(:,:,:), POINTER :: var |
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| 466 | #endif |
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| 467 | REAL, DIMENSION(nzb+1:nzt) :: dissipation, l, ll |
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| 468 | |
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| 469 | |
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| 470 | ! |
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| 471 | !-- Calculate the mixing length (for dissipation) |
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| 472 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 473 | dvar_dz = atmos_ocean_sign * & |
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| 474 | ( var(k+1,j,i) - var(k-1,j,i) ) * dd2zu(k) |
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| 475 | IF ( dvar_dz > 0.0 ) THEN |
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| 476 | IF ( use_reference ) THEN |
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| 477 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 478 | SQRT( g / var_reference * dvar_dz ) + 1E-5 |
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| 479 | ELSE |
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| 480 | l_stable = 0.76 * SQRT( e(k,j,i) ) / & |
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| 481 | SQRT( g / var(k,j,i) * dvar_dz ) + 1E-5 |
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| 482 | ENDIF |
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| 483 | ELSE |
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| 484 | l_stable = l_grid(k) |
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| 485 | ENDIF |
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| 486 | ! |
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| 487 | !-- Adjustment of the mixing length |
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| 488 | IF ( wall_adjustment ) THEN |
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| 489 | l(k) = MIN( wall_adjustment_factor * & |
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| 490 | ( zu(k) - zw(nzb_s_inner(j,i)) ), l_grid(k), & |
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| 491 | l_stable ) |
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| 492 | ll(k) = MIN( wall_adjustment_factor * & |
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| 493 | ( zu(k) - zw(nzb_s_inner(j,i)) ), l_grid(k) ) |
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| 494 | ELSE |
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| 495 | l(k) = MIN( l_grid(k), l_stable ) |
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| 496 | ll(k) = l_grid(k) |
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| 497 | ENDIF |
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| 498 | ! |
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| 499 | !-- Calculate the tendency term |
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| 500 | dissipation(k) = ( 0.19 + 0.74 * l(k) / ll(k) ) * e(k,j,i) * & |
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| 501 | SQRT( e(k,j,i) ) / l(k) |
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| 502 | |
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| 503 | tend(k,j,i) = tend(k,j,i) & |
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| 504 | + ( & |
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| 505 | ( km(k,j,i)+km(k,j,i+1) ) * ( e(k,j,i+1)-e(k,j,i) ) & |
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| 506 | - ( km(k,j,i)+km(k,j,i-1) ) * ( e(k,j,i)-e(k,j,i-1) ) & |
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| 507 | ) * ddx2 & |
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| 508 | + ( & |
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| 509 | ( km(k,j,i)+km(k,j+1,i) ) * ( e(k,j+1,i)-e(k,j,i) ) & |
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| 510 | - ( km(k,j,i)+km(k,j-1,i) ) * ( e(k,j,i)-e(k,j-1,i) ) & |
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| 511 | ) * ddy2 & |
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| 512 | + ( & |
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| 513 | ( km(k,j,i)+km(k+1,j,i) ) * ( e(k+1,j,i)-e(k,j,i) ) * ddzu(k+1) & |
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| 514 | - ( km(k,j,i)+km(k-1,j,i) ) * ( e(k,j,i)-e(k-1,j,i) ) * ddzu(k) & |
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| 515 | ) * ddzw(k) & |
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| 516 | - dissipation(k) |
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| 517 | |
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| 518 | ENDDO |
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| 519 | |
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| 520 | ! |
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| 521 | !-- Store dissipation if needed for calculating the sgs particle velocities |
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| 522 | IF ( use_sgs_for_particles .OR. wang_kernel ) THEN |
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| 523 | DO k = nzb_s_inner(j,i)+1, nzt |
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| 524 | diss(k,j,i) = dissipation(k) |
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| 525 | ENDDO |
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| 526 | ! |
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| 527 | !-- Boundary condition for dissipation |
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| 528 | diss(nzb_s_inner(j,i),j,i) = diss(nzb_s_inner(j,i)+1,j,i) |
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| 529 | ENDIF |
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| 530 | |
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| 531 | END SUBROUTINE diffusion_e_ij |
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| 532 | |
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| 533 | END MODULE diffusion_e_mod |
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