[1] | 1 | SUBROUTINE init_grid |
---|
| 2 | |
---|
| 3 | !------------------------------------------------------------------------------! |
---|
[254] | 4 | ! Current revisions: |
---|
[1] | 5 | ! ----------------- |
---|
[667] | 6 | ! Definition of new array bounds nxlg, nxrg, nysg, nyng on each PE. |
---|
| 7 | ! Furthermore the allocation of arrays and steering of loops is done with these |
---|
| 8 | ! parameters. Call of exchange_horiz are modified. |
---|
| 9 | ! In case of dirichlet bounday condition at the bottom zu(0)=0.0 |
---|
| 10 | ! dzu_mg has to be set explicitly for a equally spaced grid near bottom. |
---|
| 11 | ! ddzu_pres added to use a equally spaced grid near bottom. |
---|
[139] | 12 | ! |
---|
| 13 | ! Former revisions: |
---|
| 14 | ! ----------------- |
---|
| 15 | ! $Id: init_grid.f90 667 2010-12-23 12:06:00Z suehring $ |
---|
| 16 | ! |
---|
[556] | 17 | ! 555 2010-09-07 07:32:53Z raasch |
---|
| 18 | ! Bugfix: default setting of nzb_local for flat topographie |
---|
| 19 | ! |
---|
[392] | 20 | ! 274 2009-03-26 15:11:21Z heinze |
---|
| 21 | ! Output of messages replaced by message handling routine. |
---|
| 22 | ! new topography case 'single_street_canyon' |
---|
| 23 | ! |
---|
[226] | 24 | ! 217 2008-12-09 18:00:48Z letzel |
---|
| 25 | ! +topography_grid_convention |
---|
| 26 | ! |
---|
[139] | 27 | ! 134 2007-11-21 07:28:38Z letzel |
---|
[134] | 28 | ! Redefine initial nzb_local as the actual total size of topography (later the |
---|
| 29 | ! extent of topography in nzb_local is reduced by 1dx at the E topography walls |
---|
| 30 | ! and by 1dy at the N topography walls to form the basis for nzb_s_inner); |
---|
| 31 | ! for consistency redefine 'single_building' case. |
---|
[114] | 32 | ! Calculation of wall flag arrays |
---|
[1] | 33 | ! |
---|
[98] | 34 | ! 94 2007-06-01 15:25:22Z raasch |
---|
| 35 | ! Grid definition for ocean version |
---|
| 36 | ! |
---|
[77] | 37 | ! 75 2007-03-22 09:54:05Z raasch |
---|
| 38 | ! storage of topography height arrays zu_s_inner and zw_s_inner, |
---|
| 39 | ! 2nd+3rd argument removed from exchange horiz |
---|
| 40 | ! |
---|
[39] | 41 | ! 19 2007-02-23 04:53:48Z raasch |
---|
| 42 | ! Setting of nzt_diff |
---|
| 43 | ! |
---|
[3] | 44 | ! RCS Log replace by Id keyword, revision history cleaned up |
---|
| 45 | ! |
---|
[1] | 46 | ! Revision 1.17 2006/08/22 14:00:05 raasch |
---|
| 47 | ! +dz_max to limit vertical stretching, |
---|
| 48 | ! bugfix in index array initialization for line- or point-like topography |
---|
| 49 | ! structures |
---|
| 50 | ! |
---|
| 51 | ! Revision 1.1 1997/08/11 06:17:45 raasch |
---|
| 52 | ! Initial revision (Testversion) |
---|
| 53 | ! |
---|
| 54 | ! |
---|
| 55 | ! Description: |
---|
| 56 | ! ------------ |
---|
| 57 | ! Creating grid depending constants |
---|
| 58 | !------------------------------------------------------------------------------! |
---|
| 59 | |
---|
| 60 | USE arrays_3d |
---|
| 61 | USE control_parameters |
---|
| 62 | USE grid_variables |
---|
| 63 | USE indices |
---|
| 64 | USE pegrid |
---|
| 65 | |
---|
| 66 | IMPLICIT NONE |
---|
| 67 | |
---|
[240] | 68 | INTEGER :: bh, blx, bly, bxl, bxr, byn, bys, ch, cwx, cwy, cxl, cxr, cyn, & |
---|
| 69 | cys, gls, i, inc, i_center, j, j_center, k, l, nxl_l, nxr_l, & |
---|
[559] | 70 | nyn_l, nys_l, nzb_si, nzt_l, vi |
---|
[1] | 71 | |
---|
| 72 | INTEGER, DIMENSION(:), ALLOCATABLE :: vertical_influence |
---|
| 73 | |
---|
| 74 | INTEGER, DIMENSION(:,:), ALLOCATABLE :: corner_nl, corner_nr, corner_sl, & |
---|
| 75 | corner_sr, wall_l, wall_n, wall_r,& |
---|
| 76 | wall_s, nzb_local, nzb_tmp |
---|
| 77 | |
---|
| 78 | REAL :: dx_l, dy_l, dz_stretched |
---|
| 79 | |
---|
| 80 | REAL, DIMENSION(0:ny,0:nx) :: topo_height |
---|
| 81 | |
---|
| 82 | REAL, DIMENSION(:,:,:), ALLOCATABLE :: distance |
---|
[667] | 83 | |
---|
[1] | 84 | ! |
---|
[667] | 85 | ! Computation of the array bounds. |
---|
| 86 | nxlg = nxl - nbgp |
---|
| 87 | nxrg = nxr + nbgp |
---|
| 88 | nysg = nys - nbgp |
---|
| 89 | nyng = nyn + nbgp |
---|
| 90 | ! |
---|
[1] | 91 | !-- Allocate grid arrays |
---|
| 92 | ALLOCATE( ddzu(1:nzt+1), ddzw(1:nzt+1), dd2zu(1:nzt), dzu(1:nzt+1), & |
---|
[667] | 93 | dzw(1:nzt+1), l_grid(1:nzt), zu(nzb:nzt+1), zw(nzb:nzt+1) ) |
---|
[1] | 94 | |
---|
| 95 | ! |
---|
| 96 | !-- Compute height of u-levels from constant grid length and dz stretch factors |
---|
| 97 | IF ( dz == -1.0 ) THEN |
---|
[254] | 98 | message_string = 'missing dz' |
---|
| 99 | CALL message( 'init_grid', 'PA0200', 1, 2, 0, 6, 0 ) |
---|
[1] | 100 | ELSEIF ( dz <= 0.0 ) THEN |
---|
[254] | 101 | WRITE( message_string, * ) 'dz=',dz,' <= 0.0' |
---|
| 102 | CALL message( 'init_grid', 'PA0201', 1, 2, 0, 6, 0 ) |
---|
[1] | 103 | ENDIF |
---|
[94] | 104 | |
---|
[1] | 105 | ! |
---|
[94] | 106 | !-- Define the vertical grid levels |
---|
| 107 | IF ( .NOT. ocean ) THEN |
---|
| 108 | ! |
---|
| 109 | !-- Grid for atmosphere with surface at z=0 (k=0, w-grid). |
---|
| 110 | !-- The first u-level above the surface corresponds to the top of the |
---|
| 111 | !-- Prandtl-layer. |
---|
[667] | 112 | |
---|
| 113 | IF ( ibc_uv_b == 0 .OR. ibc_uv_b == 2 ) THEN |
---|
| 114 | zu(0) = 0.0 |
---|
| 115 | ! zu(0) = - dz * 0.5 |
---|
| 116 | ELSE |
---|
| 117 | zu(0) = - dz * 0.5 |
---|
| 118 | ENDIF |
---|
[94] | 119 | zu(1) = dz * 0.5 |
---|
[1] | 120 | |
---|
[94] | 121 | dz_stretch_level_index = nzt+1 |
---|
| 122 | dz_stretched = dz |
---|
| 123 | DO k = 2, nzt+1 |
---|
| 124 | IF ( dz_stretch_level <= zu(k-1) .AND. dz_stretched < dz_max ) THEN |
---|
| 125 | dz_stretched = dz_stretched * dz_stretch_factor |
---|
| 126 | dz_stretched = MIN( dz_stretched, dz_max ) |
---|
| 127 | IF ( dz_stretch_level_index == nzt+1 ) dz_stretch_level_index = k-1 |
---|
| 128 | ENDIF |
---|
| 129 | zu(k) = zu(k-1) + dz_stretched |
---|
| 130 | ENDDO |
---|
[1] | 131 | |
---|
| 132 | ! |
---|
[94] | 133 | !-- Compute the w-levels. They are always staggered half-way between the |
---|
| 134 | !-- corresponding u-levels. The top w-level is extrapolated linearly. |
---|
| 135 | zw(0) = 0.0 |
---|
| 136 | DO k = 1, nzt |
---|
| 137 | zw(k) = ( zu(k) + zu(k+1) ) * 0.5 |
---|
| 138 | ENDDO |
---|
| 139 | zw(nzt+1) = zw(nzt) + 2.0 * ( zu(nzt+1) - zw(nzt) ) |
---|
[1] | 140 | |
---|
[94] | 141 | ELSE |
---|
[1] | 142 | ! |
---|
[94] | 143 | !-- Grid for ocean with solid surface at z=0 (k=0, w-grid). The free water |
---|
| 144 | !-- surface is at k=nzt (w-grid). |
---|
| 145 | !-- Since the w-level lies always on the surface, the first/last u-level |
---|
| 146 | !-- (staggered!) lies below the bottom surface / above the free surface. |
---|
| 147 | !-- It is used for "mirror" boundary condition. |
---|
| 148 | !-- The first u-level above the bottom surface corresponds to the top of the |
---|
| 149 | !-- Prandtl-layer. |
---|
| 150 | zu(nzt+1) = dz * 0.5 |
---|
| 151 | zu(nzt) = - dz * 0.5 |
---|
| 152 | |
---|
| 153 | dz_stretch_level_index = 0 |
---|
| 154 | dz_stretched = dz |
---|
| 155 | DO k = nzt-1, 0, -1 |
---|
| 156 | IF ( dz_stretch_level <= ABS( zu(k+1) ) .AND. & |
---|
| 157 | dz_stretched < dz_max ) THEN |
---|
| 158 | dz_stretched = dz_stretched * dz_stretch_factor |
---|
| 159 | dz_stretched = MIN( dz_stretched, dz_max ) |
---|
| 160 | IF ( dz_stretch_level_index == 0 ) dz_stretch_level_index = k+1 |
---|
| 161 | ENDIF |
---|
| 162 | zu(k) = zu(k+1) - dz_stretched |
---|
| 163 | ENDDO |
---|
| 164 | |
---|
| 165 | ! |
---|
| 166 | !-- Compute the w-levels. They are always staggered half-way between the |
---|
| 167 | !-- corresponding u-levels. |
---|
| 168 | !-- The top w-level (nzt+1) is not used but set for consistency, since |
---|
| 169 | !-- w and all scalar variables are defined up tp nzt+1. |
---|
| 170 | zw(nzt+1) = dz |
---|
| 171 | zw(nzt) = 0.0 |
---|
| 172 | DO k = 0, nzt |
---|
| 173 | zw(k) = ( zu(k) + zu(k+1) ) * 0.5 |
---|
| 174 | ENDDO |
---|
| 175 | |
---|
| 176 | ENDIF |
---|
| 177 | |
---|
| 178 | ! |
---|
[1] | 179 | !-- Compute grid lengths. |
---|
| 180 | DO k = 1, nzt+1 |
---|
| 181 | dzu(k) = zu(k) - zu(k-1) |
---|
| 182 | ddzu(k) = 1.0 / dzu(k) |
---|
| 183 | dzw(k) = zw(k) - zw(k-1) |
---|
| 184 | ddzw(k) = 1.0 / dzw(k) |
---|
| 185 | ENDDO |
---|
| 186 | |
---|
| 187 | DO k = 1, nzt |
---|
| 188 | dd2zu(k) = 1.0 / ( dzu(k) + dzu(k+1) ) |
---|
| 189 | ENDDO |
---|
[667] | 190 | |
---|
| 191 | ! |
---|
| 192 | !-- In case of FFT method or SOR swap inverse grid lenght ddzu to ddzu_fft and |
---|
| 193 | !-- modify the lowest entry. This is necessary for atmosphere runs, because |
---|
| 194 | !-- zu(0) and so ddzu(1) changed. Accompanied with this modified arrays |
---|
| 195 | !-- pressure solver uses wrong values and this causes kinks in the profiles |
---|
| 196 | !-- of turbulent quantities. |
---|
| 197 | IF ( psolver /= 'multigrid' ) THEN |
---|
| 198 | ALLOCATE( ddzu_pres(1:nzt+1) ) |
---|
| 199 | ddzu_pres = ddzu |
---|
| 200 | IF( .NOT. ocean ) ddzu_pres(1) = ddzu_pres(2) |
---|
| 201 | ENDIF |
---|
[1] | 202 | |
---|
| 203 | ! |
---|
| 204 | !-- In case of multigrid method, compute grid lengths and grid factors for the |
---|
| 205 | !-- grid levels |
---|
| 206 | IF ( psolver == 'multigrid' ) THEN |
---|
| 207 | |
---|
| 208 | ALLOCATE( ddx2_mg(maximum_grid_level), ddy2_mg(maximum_grid_level), & |
---|
| 209 | dzu_mg(nzb+1:nzt+1,maximum_grid_level), & |
---|
| 210 | dzw_mg(nzb+1:nzt+1,maximum_grid_level), & |
---|
| 211 | f1_mg(nzb+1:nzt,maximum_grid_level), & |
---|
| 212 | f2_mg(nzb+1:nzt,maximum_grid_level), & |
---|
| 213 | f3_mg(nzb+1:nzt,maximum_grid_level) ) |
---|
| 214 | |
---|
| 215 | dzu_mg(:,maximum_grid_level) = dzu |
---|
[667] | 216 | ! |
---|
| 217 | !-- To ensure a equally spaced grid. For ocean runs this is not necessary, |
---|
| 218 | !-- because zu(0) does not changed so far. Also this would cause errors |
---|
| 219 | !-- if a vertical stretching for ocean runs is used. |
---|
| 220 | IF ( .NOT. ocean ) dzu_mg(1,maximum_grid_level) = dzu(2) |
---|
[1] | 221 | dzw_mg(:,maximum_grid_level) = dzw |
---|
| 222 | nzt_l = nzt |
---|
| 223 | DO l = maximum_grid_level-1, 1, -1 |
---|
| 224 | dzu_mg(nzb+1,l) = 2.0 * dzu_mg(nzb+1,l+1) |
---|
| 225 | dzw_mg(nzb+1,l) = 2.0 * dzw_mg(nzb+1,l+1) |
---|
| 226 | nzt_l = nzt_l / 2 |
---|
| 227 | DO k = 2, nzt_l+1 |
---|
| 228 | dzu_mg(k,l) = dzu_mg(2*k-2,l+1) + dzu_mg(2*k-1,l+1) |
---|
| 229 | dzw_mg(k,l) = dzw_mg(2*k-2,l+1) + dzw_mg(2*k-1,l+1) |
---|
| 230 | ENDDO |
---|
| 231 | ENDDO |
---|
| 232 | |
---|
| 233 | nzt_l = nzt |
---|
| 234 | dx_l = dx |
---|
| 235 | dy_l = dy |
---|
| 236 | DO l = maximum_grid_level, 1, -1 |
---|
| 237 | ddx2_mg(l) = 1.0 / dx_l**2 |
---|
| 238 | ddy2_mg(l) = 1.0 / dy_l**2 |
---|
| 239 | DO k = nzb+1, nzt_l |
---|
| 240 | f2_mg(k,l) = 1.0 / ( dzu_mg(k+1,l) * dzw_mg(k,l) ) |
---|
| 241 | f3_mg(k,l) = 1.0 / ( dzu_mg(k,l) * dzw_mg(k,l) ) |
---|
| 242 | f1_mg(k,l) = 2.0 * ( ddx2_mg(l) + ddy2_mg(l) ) + & |
---|
| 243 | f2_mg(k,l) + f3_mg(k,l) |
---|
| 244 | ENDDO |
---|
| 245 | nzt_l = nzt_l / 2 |
---|
| 246 | dx_l = dx_l * 2.0 |
---|
| 247 | dy_l = dy_l * 2.0 |
---|
| 248 | ENDDO |
---|
| 249 | |
---|
| 250 | ENDIF |
---|
| 251 | |
---|
| 252 | ! |
---|
| 253 | !-- Compute the reciprocal values of the horizontal grid lengths. |
---|
| 254 | ddx = 1.0 / dx |
---|
| 255 | ddy = 1.0 / dy |
---|
| 256 | dx2 = dx * dx |
---|
| 257 | dy2 = dy * dy |
---|
| 258 | ddx2 = 1.0 / dx2 |
---|
| 259 | ddy2 = 1.0 / dy2 |
---|
| 260 | |
---|
| 261 | ! |
---|
| 262 | !-- Compute the grid-dependent mixing length. |
---|
| 263 | DO k = 1, nzt |
---|
| 264 | l_grid(k) = ( dx * dy * dzw(k) )**0.33333333333333 |
---|
| 265 | ENDDO |
---|
| 266 | |
---|
| 267 | ! |
---|
| 268 | !-- Allocate outer and inner index arrays for topography and set |
---|
[114] | 269 | !-- defaults. |
---|
| 270 | !-- nzb_local has to contain additional layers of ghost points for calculating |
---|
| 271 | !-- the flag arrays needed for the multigrid method |
---|
| 272 | gls = 2**( maximum_grid_level ) |
---|
[667] | 273 | |
---|
[114] | 274 | ALLOCATE( corner_nl(nys:nyn,nxl:nxr), corner_nr(nys:nyn,nxl:nxr), & |
---|
| 275 | corner_sl(nys:nyn,nxl:nxr), corner_sr(nys:nyn,nxl:nxr), & |
---|
[667] | 276 | nzb_local(-gls:ny+gls,-gls:nx+gls), & |
---|
| 277 | nzb_tmp(-nbgp:ny+nbgp,-nbgp:nx+nbgp), & |
---|
[114] | 278 | wall_l(nys:nyn,nxl:nxr), wall_n(nys:nyn,nxl:nxr), & |
---|
[1] | 279 | wall_r(nys:nyn,nxl:nxr), wall_s(nys:nyn,nxl:nxr) ) |
---|
[667] | 280 | ALLOCATE( fwxm(nysg:nyng,nxlg:nxrg), fwxp(nysg:nyng,nxlg:nxrg), & |
---|
| 281 | fwym(nysg:nyng,nxlg:nxrg), fwyp(nysg:nyng,nxlg:nxrg), & |
---|
| 282 | fxm(nysg:nyng,nxlg:nxrg), fxp(nysg:nyng,nxlg:nxrg), & |
---|
| 283 | fym(nysg:nyng,nxlg:nxrg), fyp(nysg:nyng,nxlg:nxrg), & |
---|
| 284 | nzb_s_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 285 | nzb_s_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 286 | nzb_u_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 287 | nzb_u_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 288 | nzb_v_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 289 | nzb_v_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 290 | nzb_w_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 291 | nzb_w_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 292 | nzb_diff_s_inner(nysg:nyng,nxlg:nxrg), & |
---|
| 293 | nzb_diff_s_outer(nysg:nyng,nxlg:nxrg), & |
---|
| 294 | nzb_diff_u(nysg:nyng,nxlg:nxrg), & |
---|
| 295 | nzb_diff_v(nysg:nyng,nxlg:nxrg), & |
---|
| 296 | nzb_2d(nysg:nyng,nxlg:nxrg), & |
---|
| 297 | wall_e_x(nysg:nyng,nxlg:nxrg), & |
---|
| 298 | wall_e_y(nysg:nyng,nxlg:nxrg), & |
---|
| 299 | wall_u(nysg:nyng,nxlg:nxrg), & |
---|
| 300 | wall_v(nysg:nyng,nxlg:nxrg), & |
---|
| 301 | wall_w_x(nysg:nyng,nxlg:nxrg), & |
---|
| 302 | wall_w_y(nysg:nyng,nxlg:nxrg) ) |
---|
[1] | 303 | |
---|
| 304 | |
---|
[667] | 305 | |
---|
| 306 | ALLOCATE( l_wall(nzb:nzt+1,nysg:nyng,nxlg:nxrg) ) |
---|
| 307 | |
---|
[1] | 308 | nzb_s_inner = nzb; nzb_s_outer = nzb |
---|
| 309 | nzb_u_inner = nzb; nzb_u_outer = nzb |
---|
| 310 | nzb_v_inner = nzb; nzb_v_outer = nzb |
---|
| 311 | nzb_w_inner = nzb; nzb_w_outer = nzb |
---|
| 312 | |
---|
| 313 | ! |
---|
[19] | 314 | !-- Define vertical gridpoint from (or to) which on the usual finite difference |
---|
[1] | 315 | !-- form (which does not use surface fluxes) is applied |
---|
| 316 | IF ( prandtl_layer .OR. use_surface_fluxes ) THEN |
---|
| 317 | nzb_diff = nzb + 2 |
---|
| 318 | ELSE |
---|
| 319 | nzb_diff = nzb + 1 |
---|
| 320 | ENDIF |
---|
[19] | 321 | IF ( use_top_fluxes ) THEN |
---|
| 322 | nzt_diff = nzt - 1 |
---|
| 323 | ELSE |
---|
| 324 | nzt_diff = nzt |
---|
| 325 | ENDIF |
---|
[1] | 326 | |
---|
| 327 | nzb_diff_s_inner = nzb_diff; nzb_diff_s_outer = nzb_diff |
---|
| 328 | nzb_diff_u = nzb_diff; nzb_diff_v = nzb_diff |
---|
| 329 | |
---|
| 330 | wall_e_x = 0.0; wall_e_y = 0.0; wall_u = 0.0; wall_v = 0.0 |
---|
| 331 | wall_w_x = 0.0; wall_w_y = 0.0 |
---|
| 332 | fwxp = 1.0; fwxm = 1.0; fwyp = 1.0; fwym = 1.0 |
---|
| 333 | fxp = 1.0; fxm = 1.0; fyp = 1.0; fym = 1.0 |
---|
| 334 | |
---|
| 335 | ! |
---|
| 336 | !-- Initialize near-wall mixing length l_wall only in the vertical direction |
---|
| 337 | !-- for the moment, |
---|
| 338 | !-- multiplication with wall_adjustment_factor near the end of this routine |
---|
| 339 | l_wall(nzb,:,:) = l_grid(1) |
---|
| 340 | DO k = nzb+1, nzt |
---|
| 341 | l_wall(k,:,:) = l_grid(k) |
---|
| 342 | ENDDO |
---|
| 343 | l_wall(nzt+1,:,:) = l_grid(nzt) |
---|
| 344 | |
---|
| 345 | ALLOCATE ( vertical_influence(nzb:nzt) ) |
---|
| 346 | DO k = 1, nzt |
---|
| 347 | vertical_influence(k) = MIN ( INT( l_grid(k) / & |
---|
| 348 | ( wall_adjustment_factor * dzw(k) ) + 0.5 ), nzt - k ) |
---|
| 349 | ENDDO |
---|
| 350 | |
---|
| 351 | DO k = 1, MAXVAL( nzb_s_inner ) |
---|
| 352 | IF ( l_grid(k) > 1.5 * dx * wall_adjustment_factor .OR. & |
---|
| 353 | l_grid(k) > 1.5 * dy * wall_adjustment_factor ) THEN |
---|
[254] | 354 | WRITE( message_string, * ) 'grid anisotropy exceeds ', & |
---|
| 355 | 'threshold given by only local', & |
---|
| 356 | ' &horizontal reduction of near_wall ', & |
---|
| 357 | 'mixing length l_wall', & |
---|
| 358 | ' &starting from height level k = ', k, '.' |
---|
| 359 | CALL message( 'init_grid', 'PA0202', 0, 1, 0, 6, 0 ) |
---|
[1] | 360 | EXIT |
---|
| 361 | ENDIF |
---|
| 362 | ENDDO |
---|
| 363 | vertical_influence(0) = vertical_influence(1) |
---|
| 364 | |
---|
[667] | 365 | DO i = nxlg, nxrg |
---|
| 366 | DO j = nysg, nyng |
---|
[1] | 367 | DO k = nzb_s_inner(j,i) + 1, & |
---|
| 368 | nzb_s_inner(j,i) + vertical_influence(nzb_s_inner(j,i)) |
---|
| 369 | l_wall(k,j,i) = zu(k) - zw(nzb_s_inner(j,i)) |
---|
| 370 | ENDDO |
---|
| 371 | ENDDO |
---|
| 372 | ENDDO |
---|
| 373 | |
---|
| 374 | ! |
---|
| 375 | !-- Set outer and inner index arrays for non-flat topography. |
---|
| 376 | !-- Here consistency checks concerning domain size and periodicity are |
---|
| 377 | !-- necessary. |
---|
| 378 | !-- Within this SELECT CASE structure only nzb_local is initialized |
---|
| 379 | !-- individually depending on the chosen topography type, all other index |
---|
| 380 | !-- arrays are initialized further below. |
---|
| 381 | SELECT CASE ( TRIM( topography ) ) |
---|
| 382 | |
---|
| 383 | CASE ( 'flat' ) |
---|
| 384 | ! |
---|
[555] | 385 | !-- nzb_local is required for the multigrid solver |
---|
| 386 | nzb_local = 0 |
---|
[1] | 387 | |
---|
| 388 | CASE ( 'single_building' ) |
---|
| 389 | ! |
---|
| 390 | !-- Single rectangular building, by default centered in the middle of the |
---|
| 391 | !-- total domain |
---|
| 392 | blx = NINT( building_length_x / dx ) |
---|
| 393 | bly = NINT( building_length_y / dy ) |
---|
| 394 | bh = NINT( building_height / dz ) |
---|
| 395 | |
---|
| 396 | IF ( building_wall_left == 9999999.9 ) THEN |
---|
| 397 | building_wall_left = ( nx + 1 - blx ) / 2 * dx |
---|
| 398 | ENDIF |
---|
| 399 | bxl = NINT( building_wall_left / dx ) |
---|
| 400 | bxr = bxl + blx |
---|
| 401 | |
---|
| 402 | IF ( building_wall_south == 9999999.9 ) THEN |
---|
| 403 | building_wall_south = ( ny + 1 - bly ) / 2 * dy |
---|
| 404 | ENDIF |
---|
| 405 | bys = NINT( building_wall_south / dy ) |
---|
| 406 | byn = bys + bly |
---|
| 407 | |
---|
| 408 | ! |
---|
| 409 | !-- Building size has to meet some requirements |
---|
| 410 | IF ( ( bxl < 1 ) .OR. ( bxr > nx-1 ) .OR. ( bxr < bxl+3 ) .OR. & |
---|
| 411 | ( bys < 1 ) .OR. ( byn > ny-1 ) .OR. ( byn < bys+3 ) ) THEN |
---|
[274] | 412 | WRITE( message_string, * ) 'inconsistent building parameters:', & |
---|
| 413 | '& bxl=', bxl, 'bxr=', bxr, 'bys=', bys, & |
---|
| 414 | 'byn=', byn, 'nx=', nx, 'ny=', ny |
---|
[254] | 415 | CALL message( 'init_grid', 'PA0203', 1, 2, 0, 6, 0 ) |
---|
[1] | 416 | ENDIF |
---|
| 417 | |
---|
| 418 | ! |
---|
[217] | 419 | !-- Define the building. |
---|
[1] | 420 | nzb_local = 0 |
---|
[134] | 421 | nzb_local(bys:byn,bxl:bxr) = bh |
---|
[1] | 422 | |
---|
[240] | 423 | CASE ( 'single_street_canyon' ) |
---|
| 424 | ! |
---|
| 425 | !-- Single quasi-2D street canyon of infinite length in x or y direction. |
---|
| 426 | !-- The canyon is centered in the other direction by default. |
---|
| 427 | IF ( canyon_width_x /= 9999999.9 ) THEN |
---|
| 428 | ! |
---|
| 429 | !-- Street canyon in y direction |
---|
| 430 | cwx = NINT( canyon_width_x / dx ) |
---|
| 431 | IF ( canyon_wall_left == 9999999.9 ) THEN |
---|
| 432 | canyon_wall_left = ( nx + 1 - cwx ) / 2 * dx |
---|
| 433 | ENDIF |
---|
| 434 | cxl = NINT( canyon_wall_left / dx ) |
---|
| 435 | cxr = cxl + cwx |
---|
| 436 | |
---|
| 437 | ELSEIF ( canyon_width_y /= 9999999.9 ) THEN |
---|
| 438 | ! |
---|
| 439 | !-- Street canyon in x direction |
---|
| 440 | cwy = NINT( canyon_width_y / dy ) |
---|
| 441 | IF ( canyon_wall_south == 9999999.9 ) THEN |
---|
| 442 | canyon_wall_south = ( ny + 1 - cwy ) / 2 * dy |
---|
| 443 | ENDIF |
---|
| 444 | cys = NINT( canyon_wall_south / dy ) |
---|
| 445 | cyn = cys + cwy |
---|
| 446 | |
---|
| 447 | ELSE |
---|
[254] | 448 | |
---|
| 449 | message_string = 'no street canyon width given' |
---|
| 450 | CALL message( 'init_grid', 'PA0204', 1, 2, 0, 6, 0 ) |
---|
| 451 | |
---|
[240] | 452 | ENDIF |
---|
| 453 | |
---|
| 454 | ch = NINT( canyon_height / dz ) |
---|
| 455 | dp_level_ind_b = ch |
---|
| 456 | ! |
---|
| 457 | !-- Street canyon size has to meet some requirements |
---|
| 458 | IF ( canyon_width_x /= 9999999.9 ) THEN |
---|
| 459 | IF ( ( cxl < 1 ) .OR. ( cxr > nx-1 ) .OR. ( cwx < 3 ) .OR. & |
---|
| 460 | ( ch < 3 ) ) THEN |
---|
[254] | 461 | WRITE( message_string, * ) 'inconsistent canyon parameters:', & |
---|
[274] | 462 | '&cxl=', cxl, 'cxr=', cxr, & |
---|
| 463 | 'cwx=', cwx, & |
---|
[254] | 464 | 'ch=', ch, 'nx=', nx, 'ny=', ny |
---|
| 465 | CALL message( 'init_grid', 'PA0205', 1, 2, 0, 6, 0 ) |
---|
[240] | 466 | ENDIF |
---|
| 467 | ELSEIF ( canyon_width_y /= 9999999.9 ) THEN |
---|
| 468 | IF ( ( cys < 1 ) .OR. ( cyn > ny-1 ) .OR. ( cwy < 3 ) .OR. & |
---|
| 469 | ( ch < 3 ) ) THEN |
---|
[254] | 470 | WRITE( message_string, * ) 'inconsistent canyon parameters:', & |
---|
[274] | 471 | '&cys=', cys, 'cyn=', cyn, & |
---|
| 472 | 'cwy=', cwy, & |
---|
[254] | 473 | 'ch=', ch, 'nx=', nx, 'ny=', ny |
---|
| 474 | CALL message( 'init_grid', 'PA0206', 1, 2, 0, 6, 0 ) |
---|
[240] | 475 | ENDIF |
---|
| 476 | ENDIF |
---|
[274] | 477 | IF ( canyon_width_x /= 9999999.9 .AND. canyon_width_y /= 9999999.9 ) & |
---|
[240] | 478 | THEN |
---|
[274] | 479 | message_string = 'inconsistent canyon parameters:' // & |
---|
[254] | 480 | '&street canyon can only be oriented' // & |
---|
| 481 | '&either in x- or in y-direction' |
---|
| 482 | CALL message( 'init_grid', 'PA0207', 1, 2, 0, 6, 0 ) |
---|
[240] | 483 | ENDIF |
---|
| 484 | |
---|
| 485 | nzb_local = ch |
---|
| 486 | IF ( canyon_width_x /= 9999999.9 ) THEN |
---|
| 487 | nzb_local(:,cxl+1:cxr-1) = 0 |
---|
| 488 | ELSEIF ( canyon_width_y /= 9999999.9 ) THEN |
---|
| 489 | nzb_local(cys+1:cyn-1,:) = 0 |
---|
| 490 | ENDIF |
---|
| 491 | |
---|
[1] | 492 | CASE ( 'read_from_file' ) |
---|
| 493 | ! |
---|
| 494 | !-- Arbitrary irregular topography data in PALM format (exactly matching |
---|
| 495 | !-- the grid size and total domain size) |
---|
| 496 | OPEN( 90, FILE='TOPOGRAPHY_DATA', STATUS='OLD', FORM='FORMATTED', & |
---|
| 497 | ERR=10 ) |
---|
[559] | 498 | DO j = ny, 0, -1 |
---|
| 499 | READ( 90, *, ERR=11, END=11 ) ( topo_height(j,i), i = 0, nx ) |
---|
| 500 | ENDDO |
---|
[1] | 501 | ! |
---|
| 502 | !-- Calculate the index height of the topography |
---|
| 503 | DO i = 0, nx |
---|
| 504 | DO j = 0, ny |
---|
| 505 | nzb_local(j,i) = NINT( topo_height(j,i) / dz ) |
---|
| 506 | ENDDO |
---|
| 507 | ENDDO |
---|
[114] | 508 | ! |
---|
| 509 | !-- Add cyclic boundaries (additional layers are for calculating flag |
---|
| 510 | !-- arrays needed for the multigrid sover) |
---|
| 511 | nzb_local(-gls:-1,0:nx) = nzb_local(ny-gls+1:ny,0:nx) |
---|
| 512 | nzb_local(ny+1:ny+gls,0:nx) = nzb_local(0:gls-1,0:nx) |
---|
| 513 | nzb_local(:,-gls:-1) = nzb_local(:,nx-gls+1:nx) |
---|
| 514 | nzb_local(:,nx+1:nx+gls) = nzb_local(:,0:gls-1) |
---|
[667] | 515 | |
---|
| 516 | |
---|
[1] | 517 | |
---|
| 518 | GOTO 12 |
---|
[254] | 519 | |
---|
| 520 | 10 message_string = 'file TOPOGRAPHY_DATA does not exist' |
---|
| 521 | CALL message( 'init_grid', 'PA0208', 1, 2, 0, 6, 0 ) |
---|
[1] | 522 | |
---|
[254] | 523 | 11 message_string = 'errors in file TOPOGRAPHY_DATA' |
---|
| 524 | CALL message( 'init_grid', 'PA0209', 1, 2, 0, 6, 0 ) |
---|
[1] | 525 | |
---|
| 526 | 12 CLOSE( 90 ) |
---|
| 527 | |
---|
| 528 | CASE DEFAULT |
---|
| 529 | ! |
---|
| 530 | !-- The DEFAULT case is reached either if the parameter topography |
---|
[217] | 531 | !-- contains a wrong character string or if the user has defined a special |
---|
[1] | 532 | !-- case in the user interface. There, the subroutine user_init_grid |
---|
| 533 | !-- checks which of these two conditions applies. |
---|
[114] | 534 | CALL user_init_grid( gls, nzb_local ) |
---|
[1] | 535 | |
---|
| 536 | END SELECT |
---|
| 537 | |
---|
| 538 | ! |
---|
[114] | 539 | !-- Test output of nzb_local -1:ny+1,-1:nx+1 |
---|
[145] | 540 | ! WRITE (9,*) '*** nzb_local ***' |
---|
| 541 | ! DO j = ny+1, -1, -1 |
---|
| 542 | ! WRITE (9,'(194(1X,I2))') ( nzb_local(j,i), i = -1, nx+1 ) |
---|
| 543 | ! ENDDO |
---|
[114] | 544 | |
---|
| 545 | ! |
---|
[1] | 546 | !-- Consistency checks and index array initialization are only required for |
---|
[217] | 547 | !-- non-flat topography, also the initialization of topography height arrays |
---|
[49] | 548 | !-- zu_s_inner and zw_w_inner |
---|
[1] | 549 | IF ( TRIM( topography ) /= 'flat' ) THEN |
---|
| 550 | |
---|
| 551 | ! |
---|
| 552 | !-- Consistency checks |
---|
| 553 | IF ( MINVAL( nzb_local ) < 0 .OR. MAXVAL( nzb_local ) > nz + 1 ) THEN |
---|
[274] | 554 | WRITE( message_string, * ) 'nzb_local values are outside the', & |
---|
| 555 | 'model domain', & |
---|
| 556 | '&MINVAL( nzb_local ) = ', MINVAL(nzb_local), & |
---|
| 557 | '&MAXVAL( nzb_local ) = ', MAXVAL(nzb_local) |
---|
[254] | 558 | CALL message( 'init_grid', 'PA0210', 1, 2, 0, 6, 0 ) |
---|
[1] | 559 | ENDIF |
---|
| 560 | |
---|
| 561 | IF ( bc_lr == 'cyclic' ) THEN |
---|
| 562 | IF ( ANY( nzb_local(:,-1) /= nzb_local(:,nx) ) .OR. & |
---|
| 563 | ANY( nzb_local(:,0) /= nzb_local(:,nx+1) ) ) THEN |
---|
[254] | 564 | message_string = 'nzb_local does not fulfill cyclic' // & |
---|
| 565 | ' boundary condition in x-direction' |
---|
| 566 | CALL message( 'init_grid', 'PA0211', 1, 2, 0, 6, 0 ) |
---|
[1] | 567 | ENDIF |
---|
| 568 | ENDIF |
---|
| 569 | IF ( bc_ns == 'cyclic' ) THEN |
---|
| 570 | IF ( ANY( nzb_local(-1,:) /= nzb_local(ny,:) ) .OR. & |
---|
| 571 | ANY( nzb_local(0,:) /= nzb_local(ny+1,:) ) ) THEN |
---|
[254] | 572 | message_string = 'nzb_local does not fulfill cyclic' // & |
---|
| 573 | ' boundary condition in y-direction' |
---|
| 574 | CALL message( 'init_grid', 'PA0212', 1, 2, 0, 6, 0 ) |
---|
[1] | 575 | ENDIF |
---|
| 576 | ENDIF |
---|
| 577 | |
---|
[217] | 578 | IF ( topography_grid_convention == 'cell_edge' ) THEN |
---|
[134] | 579 | ! |
---|
[217] | 580 | !-- The array nzb_local as defined using the 'cell_edge' convention |
---|
| 581 | !-- describes the actual total size of topography which is defined at the |
---|
| 582 | !-- cell edges where u=0 on the topography walls in x-direction and v=0 |
---|
| 583 | !-- on the topography walls in y-direction. However, PALM uses individual |
---|
| 584 | !-- arrays nzb_u|v|w|s_inner|outer that are based on nzb_s_inner. |
---|
| 585 | !-- Therefore, the extent of topography in nzb_local is now reduced by |
---|
| 586 | !-- 1dx at the E topography walls and by 1dy at the N topography walls |
---|
| 587 | !-- to form the basis for nzb_s_inner. |
---|
| 588 | DO j = -gls, ny + gls |
---|
| 589 | DO i = -gls, nx |
---|
| 590 | nzb_local(j,i) = MIN( nzb_local(j,i), nzb_local(j,i+1) ) |
---|
| 591 | ENDDO |
---|
[134] | 592 | ENDDO |
---|
[217] | 593 | !-- apply cyclic boundary conditions in x-direction |
---|
| 594 | !(ist das erforderlich? Ursache von Seung Bus Fehler?) |
---|
| 595 | nzb_local(:,nx+1:nx+gls) = nzb_local(:,0:gls-1) |
---|
| 596 | DO i = -gls, nx + gls |
---|
| 597 | DO j = -gls, ny |
---|
| 598 | nzb_local(j,i) = MIN( nzb_local(j,i), nzb_local(j+1,i) ) |
---|
| 599 | ENDDO |
---|
[134] | 600 | ENDDO |
---|
[217] | 601 | !-- apply cyclic boundary conditions in y-direction |
---|
| 602 | !(ist das erforderlich? Ursache von Seung Bus Fehler?) |
---|
| 603 | nzb_local(ny+1:ny+gls,:) = nzb_local(0:gls-1,:) |
---|
| 604 | ENDIF |
---|
[134] | 605 | |
---|
[1] | 606 | ! |
---|
| 607 | !-- Initialize index arrays nzb_s_inner and nzb_w_inner |
---|
| 608 | nzb_s_inner = nzb_local(nys-1:nyn+1,nxl-1:nxr+1) |
---|
| 609 | nzb_w_inner = nzb_local(nys-1:nyn+1,nxl-1:nxr+1) |
---|
| 610 | |
---|
| 611 | ! |
---|
| 612 | !-- Initialize remaining index arrays: |
---|
| 613 | !-- first pre-initialize them with nzb_s_inner... |
---|
| 614 | nzb_u_inner = nzb_s_inner |
---|
| 615 | nzb_u_outer = nzb_s_inner |
---|
| 616 | nzb_v_inner = nzb_s_inner |
---|
| 617 | nzb_v_outer = nzb_s_inner |
---|
| 618 | nzb_w_outer = nzb_s_inner |
---|
| 619 | nzb_s_outer = nzb_s_inner |
---|
| 620 | |
---|
| 621 | ! |
---|
| 622 | !-- ...then extend pre-initialized arrays in their according directions |
---|
| 623 | !-- based on nzb_local using nzb_tmp as a temporary global index array |
---|
| 624 | |
---|
| 625 | ! |
---|
| 626 | !-- nzb_s_outer: |
---|
| 627 | !-- extend nzb_local east-/westwards first, then north-/southwards |
---|
[667] | 628 | nzb_tmp = nzb_local(-nbgp:ny+nbgp,-nbgp:nx+nbgp) |
---|
[1] | 629 | DO j = -1, ny + 1 |
---|
| 630 | DO i = 0, nx |
---|
| 631 | nzb_tmp(j,i) = MAX( nzb_local(j,i-1), nzb_local(j,i), & |
---|
| 632 | nzb_local(j,i+1) ) |
---|
| 633 | ENDDO |
---|
| 634 | ENDDO |
---|
| 635 | DO i = nxl, nxr |
---|
| 636 | DO j = nys, nyn |
---|
| 637 | nzb_s_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i), & |
---|
| 638 | nzb_tmp(j+1,i) ) |
---|
| 639 | ENDDO |
---|
| 640 | ! |
---|
| 641 | !-- non-cyclic boundary conditions (overwritten by call of |
---|
| 642 | !-- exchange_horiz_2d_int below in case of cyclic boundary conditions) |
---|
| 643 | IF ( nys == 0 ) THEN |
---|
| 644 | j = -1 |
---|
| 645 | nzb_s_outer(j,i) = MAX( nzb_tmp(j+1,i), nzb_tmp(j,i) ) |
---|
| 646 | ENDIF |
---|
| 647 | IF ( nys == ny ) THEN |
---|
| 648 | j = ny + 1 |
---|
| 649 | nzb_s_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i) ) |
---|
| 650 | ENDIF |
---|
| 651 | ENDDO |
---|
| 652 | ! |
---|
| 653 | !-- nzb_w_outer: |
---|
| 654 | !-- identical to nzb_s_outer |
---|
| 655 | nzb_w_outer = nzb_s_outer |
---|
| 656 | |
---|
| 657 | ! |
---|
| 658 | !-- nzb_u_inner: |
---|
| 659 | !-- extend nzb_local rightwards only |
---|
[667] | 660 | nzb_tmp = nzb_local(-nbgp:ny+nbgp,-nbgp:nx+nbgp) |
---|
[1] | 661 | DO j = -1, ny + 1 |
---|
| 662 | DO i = 0, nx + 1 |
---|
| 663 | nzb_tmp(j,i) = MAX( nzb_local(j,i-1), nzb_local(j,i) ) |
---|
| 664 | ENDDO |
---|
| 665 | ENDDO |
---|
[667] | 666 | nzb_u_inner = nzb_tmp(nysg:nyng,nxlg:nxrg) |
---|
[1] | 667 | |
---|
| 668 | ! |
---|
| 669 | !-- nzb_u_outer: |
---|
| 670 | !-- extend current nzb_tmp (nzb_u_inner) north-/southwards |
---|
| 671 | DO i = nxl, nxr |
---|
| 672 | DO j = nys, nyn |
---|
| 673 | nzb_u_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i), & |
---|
| 674 | nzb_tmp(j+1,i) ) |
---|
| 675 | ENDDO |
---|
| 676 | ! |
---|
| 677 | !-- non-cyclic boundary conditions (overwritten by call of |
---|
| 678 | !-- exchange_horiz_2d_int below in case of cyclic boundary conditions) |
---|
| 679 | IF ( nys == 0 ) THEN |
---|
| 680 | j = -1 |
---|
| 681 | nzb_u_outer(j,i) = MAX( nzb_tmp(j+1,i), nzb_tmp(j,i) ) |
---|
| 682 | ENDIF |
---|
| 683 | IF ( nys == ny ) THEN |
---|
| 684 | j = ny + 1 |
---|
| 685 | nzb_u_outer(j,i) = MAX( nzb_tmp(j-1,i), nzb_tmp(j,i) ) |
---|
| 686 | ENDIF |
---|
| 687 | ENDDO |
---|
| 688 | |
---|
| 689 | ! |
---|
| 690 | !-- nzb_v_inner: |
---|
| 691 | !-- extend nzb_local northwards only |
---|
[667] | 692 | nzb_tmp = nzb_local(-nbgp:ny+nbgp,-nbgp:nx+nbgp) |
---|
[1] | 693 | DO i = -1, nx + 1 |
---|
| 694 | DO j = 0, ny + 1 |
---|
| 695 | nzb_tmp(j,i) = MAX( nzb_local(j-1,i), nzb_local(j,i) ) |
---|
| 696 | ENDDO |
---|
| 697 | ENDDO |
---|
[667] | 698 | nzb_v_inner = nzb_tmp(nys-nbgp:nyn+nbgp,nxl-nbgp:nxr+nbgp) |
---|
[1] | 699 | |
---|
| 700 | ! |
---|
| 701 | !-- nzb_v_outer: |
---|
| 702 | !-- extend current nzb_tmp (nzb_v_inner) right-/leftwards |
---|
| 703 | DO j = nys, nyn |
---|
| 704 | DO i = nxl, nxr |
---|
| 705 | nzb_v_outer(j,i) = MAX( nzb_tmp(j,i-1), nzb_tmp(j,i), & |
---|
| 706 | nzb_tmp(j,i+1) ) |
---|
| 707 | ENDDO |
---|
| 708 | ! |
---|
| 709 | !-- non-cyclic boundary conditions (overwritten by call of |
---|
| 710 | !-- exchange_horiz_2d_int below in case of cyclic boundary conditions) |
---|
| 711 | IF ( nxl == 0 ) THEN |
---|
| 712 | i = -1 |
---|
| 713 | nzb_v_outer(j,i) = MAX( nzb_tmp(j,i+1), nzb_tmp(j,i) ) |
---|
| 714 | ENDIF |
---|
| 715 | IF ( nxr == nx ) THEN |
---|
| 716 | i = nx + 1 |
---|
| 717 | nzb_v_outer(j,i) = MAX( nzb_tmp(j,i-1), nzb_tmp(j,i) ) |
---|
| 718 | ENDIF |
---|
| 719 | ENDDO |
---|
| 720 | |
---|
| 721 | ! |
---|
| 722 | !-- Exchange of lateral boundary values (parallel computers) and cyclic |
---|
| 723 | !-- boundary conditions, if applicable. |
---|
| 724 | !-- Since nzb_s_inner and nzb_w_inner are derived directly from nzb_local |
---|
| 725 | !-- they do not require exchange and are not included here. |
---|
| 726 | CALL exchange_horiz_2d_int( nzb_u_inner ) |
---|
| 727 | CALL exchange_horiz_2d_int( nzb_u_outer ) |
---|
| 728 | CALL exchange_horiz_2d_int( nzb_v_inner ) |
---|
| 729 | CALL exchange_horiz_2d_int( nzb_v_outer ) |
---|
| 730 | CALL exchange_horiz_2d_int( nzb_w_outer ) |
---|
| 731 | CALL exchange_horiz_2d_int( nzb_s_outer ) |
---|
| 732 | |
---|
[49] | 733 | ! |
---|
| 734 | !-- Allocate and set the arrays containing the topography height |
---|
| 735 | IF ( myid == 0 ) THEN |
---|
| 736 | |
---|
| 737 | ALLOCATE( zu_s_inner(0:nx+1,0:ny+1), zw_w_inner(0:nx+1,0:ny+1) ) |
---|
| 738 | |
---|
| 739 | DO i = 0, nx + 1 |
---|
| 740 | DO j = 0, ny + 1 |
---|
| 741 | zu_s_inner(i,j) = zu(nzb_local(j,i)) |
---|
| 742 | zw_w_inner(i,j) = zw(nzb_local(j,i)) |
---|
| 743 | ENDDO |
---|
| 744 | ENDDO |
---|
| 745 | |
---|
| 746 | ENDIF |
---|
| 747 | |
---|
[1] | 748 | ENDIF |
---|
| 749 | |
---|
| 750 | ! |
---|
| 751 | !-- Preliminary: to be removed after completion of the topography code! |
---|
| 752 | !-- Set the former default k index arrays nzb_2d |
---|
| 753 | nzb_2d = nzb |
---|
| 754 | |
---|
| 755 | ! |
---|
| 756 | !-- Set the individual index arrays which define the k index from which on |
---|
| 757 | !-- the usual finite difference form (which does not use surface fluxes) is |
---|
| 758 | !-- applied |
---|
| 759 | IF ( prandtl_layer .OR. use_surface_fluxes ) THEN |
---|
| 760 | nzb_diff_u = nzb_u_inner + 2 |
---|
| 761 | nzb_diff_v = nzb_v_inner + 2 |
---|
| 762 | nzb_diff_s_inner = nzb_s_inner + 2 |
---|
| 763 | nzb_diff_s_outer = nzb_s_outer + 2 |
---|
| 764 | ELSE |
---|
| 765 | nzb_diff_u = nzb_u_inner + 1 |
---|
| 766 | nzb_diff_v = nzb_v_inner + 1 |
---|
| 767 | nzb_diff_s_inner = nzb_s_inner + 1 |
---|
| 768 | nzb_diff_s_outer = nzb_s_outer + 1 |
---|
| 769 | ENDIF |
---|
| 770 | |
---|
| 771 | ! |
---|
| 772 | !-- Calculation of wall switches and factors required by diffusion_u/v.f90 and |
---|
| 773 | !-- for limitation of near-wall mixing length l_wall further below |
---|
| 774 | corner_nl = 0 |
---|
| 775 | corner_nr = 0 |
---|
| 776 | corner_sl = 0 |
---|
| 777 | corner_sr = 0 |
---|
| 778 | wall_l = 0 |
---|
| 779 | wall_n = 0 |
---|
| 780 | wall_r = 0 |
---|
| 781 | wall_s = 0 |
---|
| 782 | |
---|
| 783 | DO i = nxl, nxr |
---|
| 784 | DO j = nys, nyn |
---|
| 785 | ! |
---|
| 786 | !-- u-component |
---|
| 787 | IF ( nzb_u_outer(j,i) > nzb_u_outer(j+1,i) ) THEN |
---|
| 788 | wall_u(j,i) = 1.0 ! north wall (location of adjacent fluid) |
---|
| 789 | fym(j,i) = 0.0 |
---|
| 790 | fyp(j,i) = 1.0 |
---|
| 791 | ELSEIF ( nzb_u_outer(j,i) > nzb_u_outer(j-1,i) ) THEN |
---|
| 792 | wall_u(j,i) = 1.0 ! south wall (location of adjacent fluid) |
---|
| 793 | fym(j,i) = 1.0 |
---|
| 794 | fyp(j,i) = 0.0 |
---|
| 795 | ENDIF |
---|
| 796 | ! |
---|
| 797 | !-- v-component |
---|
| 798 | IF ( nzb_v_outer(j,i) > nzb_v_outer(j,i+1) ) THEN |
---|
| 799 | wall_v(j,i) = 1.0 ! rigth wall (location of adjacent fluid) |
---|
| 800 | fxm(j,i) = 0.0 |
---|
| 801 | fxp(j,i) = 1.0 |
---|
| 802 | ELSEIF ( nzb_v_outer(j,i) > nzb_v_outer(j,i-1) ) THEN |
---|
| 803 | wall_v(j,i) = 1.0 ! left wall (location of adjacent fluid) |
---|
| 804 | fxm(j,i) = 1.0 |
---|
| 805 | fxp(j,i) = 0.0 |
---|
| 806 | ENDIF |
---|
| 807 | ! |
---|
| 808 | !-- w-component, also used for scalars, separate arrays for shear |
---|
| 809 | !-- production of tke |
---|
| 810 | IF ( nzb_w_outer(j,i) > nzb_w_outer(j+1,i) ) THEN |
---|
| 811 | wall_e_y(j,i) = 1.0 ! north wall (location of adjacent fluid) |
---|
| 812 | wall_w_y(j,i) = 1.0 |
---|
| 813 | fwym(j,i) = 0.0 |
---|
| 814 | fwyp(j,i) = 1.0 |
---|
| 815 | ELSEIF ( nzb_w_outer(j,i) > nzb_w_outer(j-1,i) ) THEN |
---|
| 816 | wall_e_y(j,i) = -1.0 ! south wall (location of adjacent fluid) |
---|
| 817 | wall_w_y(j,i) = 1.0 |
---|
| 818 | fwym(j,i) = 1.0 |
---|
| 819 | fwyp(j,i) = 0.0 |
---|
| 820 | ENDIF |
---|
| 821 | IF ( nzb_w_outer(j,i) > nzb_w_outer(j,i+1) ) THEN |
---|
| 822 | wall_e_x(j,i) = 1.0 ! right wall (location of adjacent fluid) |
---|
| 823 | wall_w_x(j,i) = 1.0 |
---|
| 824 | fwxm(j,i) = 0.0 |
---|
| 825 | fwxp(j,i) = 1.0 |
---|
| 826 | ELSEIF ( nzb_w_outer(j,i) > nzb_w_outer(j,i-1) ) THEN |
---|
| 827 | wall_e_x(j,i) = -1.0 ! left wall (location of adjacent fluid) |
---|
| 828 | wall_w_x(j,i) = 1.0 |
---|
| 829 | fwxm(j,i) = 1.0 |
---|
| 830 | fwxp(j,i) = 0.0 |
---|
| 831 | ENDIF |
---|
| 832 | ! |
---|
| 833 | !-- Wall and corner locations inside buildings for limitation of |
---|
| 834 | !-- near-wall mixing length l_wall |
---|
| 835 | IF ( nzb_s_inner(j,i) > nzb_s_inner(j+1,i) ) THEN |
---|
| 836 | |
---|
| 837 | wall_n(j,i) = nzb_s_inner(j+1,i) + 1 ! North wall |
---|
| 838 | |
---|
| 839 | IF ( nzb_s_inner(j,i) > nzb_s_inner(j,i-1) ) THEN |
---|
| 840 | corner_nl(j,i) = MAX( nzb_s_inner(j+1,i), & ! Northleft corner |
---|
| 841 | nzb_s_inner(j,i-1) ) + 1 |
---|
| 842 | ENDIF |
---|
| 843 | |
---|
| 844 | IF ( nzb_s_inner(j,i) > nzb_s_inner(j,i+1) ) THEN |
---|
| 845 | corner_nr(j,i) = MAX( nzb_s_inner(j+1,i), & ! Northright corner |
---|
| 846 | nzb_s_inner(j,i+1) ) + 1 |
---|
| 847 | ENDIF |
---|
| 848 | |
---|
| 849 | ENDIF |
---|
| 850 | |
---|
| 851 | IF ( nzb_s_inner(j,i) > nzb_s_inner(j-1,i) ) THEN |
---|
| 852 | |
---|
| 853 | wall_s(j,i) = nzb_s_inner(j-1,i) + 1 ! South wall |
---|
| 854 | IF ( nzb_s_inner(j,i) > nzb_s_inner(j,i-1) ) THEN |
---|
| 855 | corner_sl(j,i) = MAX( nzb_s_inner(j-1,i), & ! Southleft corner |
---|
| 856 | nzb_s_inner(j,i-1) ) + 1 |
---|
| 857 | ENDIF |
---|
| 858 | |
---|
| 859 | IF ( nzb_s_inner(j,i) > nzb_s_inner(j,i+1) ) THEN |
---|
| 860 | corner_sr(j,i) = MAX( nzb_s_inner(j-1,i), & ! Southright corner |
---|
| 861 | nzb_s_inner(j,i+1) ) + 1 |
---|
| 862 | ENDIF |
---|
| 863 | |
---|
| 864 | ENDIF |
---|
| 865 | |
---|
| 866 | IF ( nzb_s_inner(j,i) > nzb_s_inner(j,i-1) ) THEN |
---|
| 867 | wall_l(j,i) = nzb_s_inner(j,i-1) + 1 ! Left wall |
---|
| 868 | ENDIF |
---|
| 869 | |
---|
| 870 | IF ( nzb_s_inner(j,i) > nzb_s_inner(j,i+1) ) THEN |
---|
| 871 | wall_r(j,i) = nzb_s_inner(j,i+1) + 1 ! Right wall |
---|
| 872 | ENDIF |
---|
| 873 | |
---|
| 874 | ENDDO |
---|
| 875 | ENDDO |
---|
| 876 | |
---|
| 877 | ! |
---|
[114] | 878 | !-- Calculate wall flag arrays for the multigrid method |
---|
| 879 | IF ( psolver == 'multigrid' ) THEN |
---|
| 880 | ! |
---|
| 881 | !-- Gridpoint increment of the current level |
---|
| 882 | inc = 1 |
---|
| 883 | |
---|
| 884 | DO l = maximum_grid_level, 1 , -1 |
---|
| 885 | |
---|
| 886 | nxl_l = nxl_mg(l) |
---|
| 887 | nxr_l = nxr_mg(l) |
---|
| 888 | nys_l = nys_mg(l) |
---|
| 889 | nyn_l = nyn_mg(l) |
---|
| 890 | nzt_l = nzt_mg(l) |
---|
| 891 | |
---|
| 892 | ! |
---|
| 893 | !-- Assign the flag level to be calculated |
---|
| 894 | SELECT CASE ( l ) |
---|
| 895 | CASE ( 1 ) |
---|
| 896 | flags => wall_flags_1 |
---|
| 897 | CASE ( 2 ) |
---|
| 898 | flags => wall_flags_2 |
---|
| 899 | CASE ( 3 ) |
---|
| 900 | flags => wall_flags_3 |
---|
| 901 | CASE ( 4 ) |
---|
| 902 | flags => wall_flags_4 |
---|
| 903 | CASE ( 5 ) |
---|
| 904 | flags => wall_flags_5 |
---|
| 905 | CASE ( 6 ) |
---|
| 906 | flags => wall_flags_6 |
---|
| 907 | CASE ( 7 ) |
---|
| 908 | flags => wall_flags_7 |
---|
| 909 | CASE ( 8 ) |
---|
| 910 | flags => wall_flags_8 |
---|
| 911 | CASE ( 9 ) |
---|
| 912 | flags => wall_flags_9 |
---|
| 913 | CASE ( 10 ) |
---|
| 914 | flags => wall_flags_10 |
---|
| 915 | END SELECT |
---|
| 916 | |
---|
| 917 | ! |
---|
| 918 | !-- Depending on the grid level, set the respective bits in case of |
---|
| 919 | !-- neighbouring walls |
---|
| 920 | !-- Bit 0: wall to the bottom |
---|
| 921 | !-- Bit 1: wall to the top (not realized in remaining PALM code so far) |
---|
| 922 | !-- Bit 2: wall to the south |
---|
| 923 | !-- Bit 3: wall to the north |
---|
| 924 | !-- Bit 4: wall to the left |
---|
| 925 | !-- Bit 5: wall to the right |
---|
[116] | 926 | !-- Bit 6: inside building |
---|
[114] | 927 | |
---|
| 928 | flags = 0 |
---|
| 929 | |
---|
| 930 | DO i = nxl_l-1, nxr_l+1 |
---|
| 931 | DO j = nys_l-1, nyn_l+1 |
---|
| 932 | DO k = nzb, nzt_l+1 |
---|
| 933 | |
---|
| 934 | ! |
---|
| 935 | !-- Inside/outside building (inside building does not need |
---|
| 936 | !-- further tests for walls) |
---|
| 937 | IF ( k*inc <= nzb_local(j*inc,i*inc) ) THEN |
---|
| 938 | |
---|
| 939 | flags(k,j,i) = IBSET( flags(k,j,i), 6 ) |
---|
| 940 | |
---|
| 941 | ELSE |
---|
| 942 | ! |
---|
| 943 | !-- Bottom wall |
---|
| 944 | IF ( (k-1)*inc <= nzb_local(j*inc,i*inc) ) THEN |
---|
| 945 | flags(k,j,i) = IBSET( flags(k,j,i), 0 ) |
---|
| 946 | ENDIF |
---|
| 947 | ! |
---|
| 948 | !-- South wall |
---|
| 949 | IF ( k*inc <= nzb_local((j-1)*inc,i*inc) ) THEN |
---|
| 950 | flags(k,j,i) = IBSET( flags(k,j,i), 2 ) |
---|
| 951 | ENDIF |
---|
| 952 | ! |
---|
| 953 | !-- North wall |
---|
| 954 | IF ( k*inc <= nzb_local((j+1)*inc,i*inc) ) THEN |
---|
| 955 | flags(k,j,i) = IBSET( flags(k,j,i), 3 ) |
---|
| 956 | ENDIF |
---|
| 957 | ! |
---|
| 958 | !-- Left wall |
---|
| 959 | IF ( k*inc <= nzb_local(j*inc,(i-1)*inc) ) THEN |
---|
| 960 | flags(k,j,i) = IBSET( flags(k,j,i), 4 ) |
---|
| 961 | ENDIF |
---|
| 962 | ! |
---|
| 963 | !-- Right wall |
---|
| 964 | IF ( k*inc <= nzb_local(j*inc,(i+1)*inc) ) THEN |
---|
| 965 | flags(k,j,i) = IBSET( flags(k,j,i), 5 ) |
---|
| 966 | ENDIF |
---|
| 967 | |
---|
| 968 | ENDIF |
---|
| 969 | |
---|
| 970 | ENDDO |
---|
| 971 | ENDDO |
---|
| 972 | ENDDO |
---|
| 973 | |
---|
| 974 | ! |
---|
| 975 | !-- Test output of flag arrays |
---|
[145] | 976 | ! i = nxl_l |
---|
| 977 | ! WRITE (9,*) ' ' |
---|
| 978 | ! WRITE (9,*) '*** mg level ', l, ' ***', mg_switch_to_pe0_level |
---|
| 979 | ! WRITE (9,*) ' inc=', inc, ' i =', nxl_l |
---|
| 980 | ! WRITE (9,*) ' nxl_l',nxl_l,' nxr_l=',nxr_l,' nys_l=',nys_l,' nyn_l=',nyn_l |
---|
| 981 | ! DO k = nzt_l+1, nzb, -1 |
---|
| 982 | ! WRITE (9,'(194(1X,I2))') ( flags(k,j,i), j = nys_l-1, nyn_l+1 ) |
---|
| 983 | ! ENDDO |
---|
[114] | 984 | |
---|
| 985 | inc = inc * 2 |
---|
| 986 | |
---|
| 987 | ENDDO |
---|
| 988 | |
---|
| 989 | ENDIF |
---|
| 990 | |
---|
| 991 | ! |
---|
[1] | 992 | !-- In case of topography: limit near-wall mixing length l_wall further: |
---|
| 993 | !-- Go through all points of the subdomain one by one and look for the closest |
---|
| 994 | !-- surface |
---|
| 995 | IF ( TRIM(topography) /= 'flat' ) THEN |
---|
| 996 | DO i = nxl, nxr |
---|
| 997 | DO j = nys, nyn |
---|
| 998 | |
---|
| 999 | nzb_si = nzb_s_inner(j,i) |
---|
| 1000 | vi = vertical_influence(nzb_si) |
---|
| 1001 | |
---|
| 1002 | IF ( wall_n(j,i) > 0 ) THEN |
---|
| 1003 | ! |
---|
| 1004 | !-- North wall (y distance) |
---|
| 1005 | DO k = wall_n(j,i), nzb_si |
---|
| 1006 | l_wall(k,j+1,i) = MIN( l_wall(k,j+1,i), 0.5 * dy ) |
---|
| 1007 | ENDDO |
---|
| 1008 | ! |
---|
| 1009 | !-- Above North wall (yz distance) |
---|
| 1010 | DO k = nzb_si + 1, nzb_si + vi |
---|
| 1011 | l_wall(k,j+1,i) = MIN( l_wall(k,j+1,i), & |
---|
| 1012 | SQRT( 0.25 * dy**2 + & |
---|
| 1013 | ( zu(k) - zw(nzb_si) )**2 ) ) |
---|
| 1014 | ENDDO |
---|
| 1015 | ! |
---|
| 1016 | !-- Northleft corner (xy distance) |
---|
| 1017 | IF ( corner_nl(j,i) > 0 ) THEN |
---|
| 1018 | DO k = corner_nl(j,i), nzb_si |
---|
| 1019 | l_wall(k,j+1,i-1) = MIN( l_wall(k,j+1,i-1), & |
---|
| 1020 | 0.5 * SQRT( dx**2 + dy**2 ) ) |
---|
| 1021 | ENDDO |
---|
| 1022 | ! |
---|
| 1023 | !-- Above Northleft corner (xyz distance) |
---|
| 1024 | DO k = nzb_si + 1, nzb_si + vi |
---|
| 1025 | l_wall(k,j+1,i-1) = MIN( l_wall(k,j+1,i-1), & |
---|
| 1026 | SQRT( 0.25 * (dx**2 + dy**2) + & |
---|
| 1027 | ( zu(k) - zw(nzb_si) )**2 ) ) |
---|
| 1028 | ENDDO |
---|
| 1029 | ENDIF |
---|
| 1030 | ! |
---|
| 1031 | !-- Northright corner (xy distance) |
---|
| 1032 | IF ( corner_nr(j,i) > 0 ) THEN |
---|
| 1033 | DO k = corner_nr(j,i), nzb_si |
---|
| 1034 | l_wall(k,j+1,i+1) = MIN( l_wall(k,j+1,i+1), & |
---|
| 1035 | 0.5 * SQRT( dx**2 + dy**2 ) ) |
---|
| 1036 | ENDDO |
---|
| 1037 | ! |
---|
| 1038 | !-- Above northright corner (xyz distance) |
---|
| 1039 | DO k = nzb_si + 1, nzb_si + vi |
---|
| 1040 | l_wall(k,j+1,i+1) = MIN( l_wall(k,j+1,i+1), & |
---|
| 1041 | SQRT( 0.25 * (dx**2 + dy**2) + & |
---|
| 1042 | ( zu(k) - zw(nzb_si) )**2 ) ) |
---|
| 1043 | ENDDO |
---|
| 1044 | ENDIF |
---|
| 1045 | ENDIF |
---|
| 1046 | |
---|
| 1047 | IF ( wall_s(j,i) > 0 ) THEN |
---|
| 1048 | ! |
---|
| 1049 | !-- South wall (y distance) |
---|
| 1050 | DO k = wall_s(j,i), nzb_si |
---|
| 1051 | l_wall(k,j-1,i) = MIN( l_wall(k,j-1,i), 0.5 * dy ) |
---|
| 1052 | ENDDO |
---|
| 1053 | ! |
---|
| 1054 | !-- Above south wall (yz distance) |
---|
| 1055 | DO k = nzb_si + 1, & |
---|
| 1056 | nzb_si + vi |
---|
| 1057 | l_wall(k,j-1,i) = MIN( l_wall(k,j-1,i), & |
---|
| 1058 | SQRT( 0.25 * dy**2 + & |
---|
| 1059 | ( zu(k) - zw(nzb_si) )**2 ) ) |
---|
| 1060 | ENDDO |
---|
| 1061 | ! |
---|
| 1062 | !-- Southleft corner (xy distance) |
---|
| 1063 | IF ( corner_sl(j,i) > 0 ) THEN |
---|
| 1064 | DO k = corner_sl(j,i), nzb_si |
---|
| 1065 | l_wall(k,j-1,i-1) = MIN( l_wall(k,j-1,i-1), & |
---|
| 1066 | 0.5 * SQRT( dx**2 + dy**2 ) ) |
---|
| 1067 | ENDDO |
---|
| 1068 | ! |
---|
| 1069 | !-- Above southleft corner (xyz distance) |
---|
| 1070 | DO k = nzb_si + 1, nzb_si + vi |
---|
| 1071 | l_wall(k,j-1,i-1) = MIN( l_wall(k,j-1,i-1), & |
---|
| 1072 | SQRT( 0.25 * (dx**2 + dy**2) + & |
---|
| 1073 | ( zu(k) - zw(nzb_si) )**2 ) ) |
---|
| 1074 | ENDDO |
---|
| 1075 | ENDIF |
---|
| 1076 | ! |
---|
| 1077 | !-- Southright corner (xy distance) |
---|
| 1078 | IF ( corner_sr(j,i) > 0 ) THEN |
---|
| 1079 | DO k = corner_sr(j,i), nzb_si |
---|
| 1080 | l_wall(k,j-1,i+1) = MIN( l_wall(k,j-1,i+1), & |
---|
| 1081 | 0.5 * SQRT( dx**2 + dy**2 ) ) |
---|
| 1082 | ENDDO |
---|
| 1083 | ! |
---|
| 1084 | !-- Above southright corner (xyz distance) |
---|
| 1085 | DO k = nzb_si + 1, nzb_si + vi |
---|
| 1086 | l_wall(k,j-1,i+1) = MIN( l_wall(k,j-1,i+1), & |
---|
| 1087 | SQRT( 0.25 * (dx**2 + dy**2) + & |
---|
| 1088 | ( zu(k) - zw(nzb_si) )**2 ) ) |
---|
| 1089 | ENDDO |
---|
| 1090 | ENDIF |
---|
| 1091 | |
---|
| 1092 | ENDIF |
---|
| 1093 | |
---|
| 1094 | IF ( wall_l(j,i) > 0 ) THEN |
---|
| 1095 | ! |
---|
| 1096 | !-- Left wall (x distance) |
---|
| 1097 | DO k = wall_l(j,i), nzb_si |
---|
| 1098 | l_wall(k,j,i-1) = MIN( l_wall(k,j,i-1), 0.5 * dx ) |
---|
| 1099 | ENDDO |
---|
| 1100 | ! |
---|
| 1101 | !-- Above left wall (xz distance) |
---|
| 1102 | DO k = nzb_si + 1, nzb_si + vi |
---|
| 1103 | l_wall(k,j,i-1) = MIN( l_wall(k,j,i-1), & |
---|
| 1104 | SQRT( 0.25 * dx**2 + & |
---|
| 1105 | ( zu(k) - zw(nzb_si) )**2 ) ) |
---|
| 1106 | ENDDO |
---|
| 1107 | ENDIF |
---|
| 1108 | |
---|
| 1109 | IF ( wall_r(j,i) > 0 ) THEN |
---|
| 1110 | ! |
---|
| 1111 | !-- Right wall (x distance) |
---|
| 1112 | DO k = wall_r(j,i), nzb_si |
---|
| 1113 | l_wall(k,j,i+1) = MIN( l_wall(k,j,i+1), 0.5 * dx ) |
---|
| 1114 | ENDDO |
---|
| 1115 | ! |
---|
| 1116 | !-- Above right wall (xz distance) |
---|
| 1117 | DO k = nzb_si + 1, nzb_si + vi |
---|
| 1118 | l_wall(k,j,i+1) = MIN( l_wall(k,j,i+1), & |
---|
| 1119 | SQRT( 0.25 * dx**2 + & |
---|
| 1120 | ( zu(k) - zw(nzb_si) )**2 ) ) |
---|
| 1121 | ENDDO |
---|
| 1122 | |
---|
| 1123 | ENDIF |
---|
| 1124 | |
---|
| 1125 | ENDDO |
---|
| 1126 | ENDDO |
---|
| 1127 | |
---|
| 1128 | ENDIF |
---|
| 1129 | |
---|
| 1130 | ! |
---|
| 1131 | !-- Multiplication with wall_adjustment_factor |
---|
| 1132 | l_wall = wall_adjustment_factor * l_wall |
---|
| 1133 | |
---|
| 1134 | ! |
---|
| 1135 | !-- Need to set lateral boundary conditions for l_wall |
---|
| 1136 | |
---|
[667] | 1137 | CALL exchange_horiz( l_wall, nbgp ) |
---|
| 1138 | |
---|
[1] | 1139 | DEALLOCATE( corner_nl, corner_nr, corner_sl, corner_sr, nzb_local, & |
---|
| 1140 | nzb_tmp, vertical_influence, wall_l, wall_n, wall_r, wall_s ) |
---|
| 1141 | |
---|
| 1142 | |
---|
| 1143 | END SUBROUTINE init_grid |
---|