psmile_mg_coars_subgrid_3d_real.F90

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00001 !-----------------------------------------------------------------------
00002 ! Copyright 2006-2010, NEC Europe Ltd., London, UK.
00003 ! All rights reserved. Use is subject to OASIS4 license terms.
00004 !-----------------------------------------------------------------------
00005 !BOP
00006 !
00007 ! !ROUTINE: PSMILe_MG_Coars_subgrid_3d_real
00008 !
00009 ! !INTERFACE:
00010 
00011       subroutine psmile_mg_coars_subgrid_3d_real ( &
00012                     chfmin, chfmax, midfp,                    &
00013                     levdim1_fine, levdim2_fine, levdim3_fine, &
00014                     chcmin, chcmax, midcp,                    &
00015                     levdim1, levdim2, levdim3, icoarse, ierror)
00016 !
00017 ! !USES:
00018 !
00019       use PRISM_constants
00020 !
00021       use PSMILe, dummy_interface => PSMILe_MG_coars_subgrid_3d_real
00022 
00023       implicit none
00024 !
00025 ! !INPUT PARAMETERS:
00026 !
00027       Integer, Intent (In)                         :: levdim1_fine, levdim2_fine, 
00028                                                       levdim3_fine
00029 
00030       Real, Intent (In)                            :: chfmin (0:levdim1_fine,  
00031                                                               0:levdim2_fine,  
00032                                                               0:levdim3_fine)
00033       Real, Intent (In)                            :: chfmax (0:levdim1_fine,  
00034                                                               0:levdim2_fine,  
00035                                                               0:levdim3_fine)
00036       Real, Intent (In)                            ::  midfp (0:levdim1_fine,  
00037                                                               0:levdim2_fine,  
00038                                                               0:levdim3_fine)
00039 !     Definintion of the finer MG level
00040 
00041       integer, Intent (In)                         :: levdim1, levdim2, levdim3
00042 
00043 !     Dimension of the next (coarse) MG level
00044 
00045       Integer, Intent (In)                         :: icoarse  (ndim_3d)
00046 
00047 !     Specifies the coarsening in each direction.
00048 !
00049 ! !OUTPUT PARAMETERS:
00050 !
00051       Real, Intent (Out)                           :: chcmin (0:levdim1, 0:levdim2, 
00052                                                               0:levdim3)
00053       Real, Intent (Out)                           :: chcmax (0:levdim1, 0:levdim2, 
00054                                                               0:levdim3)
00055       Real, Intent (Out)                           :: midcp  (0:levdim1, 0:levdim2, 
00056                                                               0:levdim3)
00057 
00058       integer, Intent (Out)                        :: ierror
00059 
00060 !     Returns the error code of PSMILe_MG_coars_subgrid_3d_real
00061 !             ierror = 0 : No error
00062 !             ierror > 0 : Severe error
00063 !
00064 ! !LOCAL VARIABLES
00065 !
00066       Integer                                      :: i, if, if1, j, jf, jf1
00067       Integer                                      :: k, kf, kf1, m, n1
00068 !
00069       Integer                                      :: inc (ndim_3d)
00070 !
00071 ! !DESCRIPTION:
00072 !
00073 ! Subroutine "PSMILe_MG_coars_subgrid_3d_real" computes next coarse level
00074 ! from the data of the finer level.
00075 !
00076 !
00077 ! !REVISION HISTORY:
00078 !
00079 !   Date      Programmer   Description
00080 ! ----------  ----------   -----------
00081 ! 03.06.25    H. Ritzdorf  created
00082 !
00083 !EOP
00084 !----------------------------------------------------------------------
00085 !
00086 !  $Id: psmile_mg_coars_subgrid_3d_real.F90 2325 2010-04-21 15:00:07Z valcke $
00087 !  $Author: valcke $
00088 !
00089    Character(len=len_cvs_string), save :: mycvs = 
00090        '$Id: psmile_mg_coars_subgrid_3d_real.F90 2325 2010-04-21 15:00:07Z valcke $'
00091 !
00092 !----------------------------------------------------------------------
00093 
00094 #ifdef VERBOSE
00095       print *, trim(ch_id), ': PSMILe_MG_coars_subgrid_3d_real'
00096 !     print *, trim(ch_id), ': levdim_fine', &
00097 !                              levdim1_fine, levdim2_fine, levdim3_fine
00098 !     print *, trim(ch_id), ': levdim     ', levdim1, levdim2, levdim3
00099 
00100       call psmile_flushstd
00101 #endif /* VERBOSE */
00102 !
00103 !  Initialization
00104 !
00105       ierror = 0
00106 !
00107 #ifdef PRISM_ASSERTION
00108       if (MINVAL(icoarse(:)) < 1 .or. MAXVAL (icoarse(:)) > 2) then
00109          call psmile_assert ( __FILE__, __LINE__, &
00110             'Bad coarsening: Must be in range [1:2]')
00111       endif
00112 #endif /* PRISM_ASSERTION */
00113 !
00114 !  Get number of directions in which coarsening is not required
00115 !
00116       n1 = 0
00117          do m = 1, ndim_3d
00118          if (icoarse(m) == 1) n1 = n1 + 1
00119          end do
00120 !
00121 !-----------------------------------------------------------------------
00122 !     General case: Coarsening in all directions
00123 !-----------------------------------------------------------------------
00124 !
00125       if (n1 == 0) then
00126 !
00127             do k = 0, levdim3
00128             kf = 2*k
00129             kf1 = min (kf+1, levdim3_fine)
00130 !
00131                do j = 0, levdim2
00132                jf = 2*j
00133                jf1 = min (jf+1, levdim2_fine)
00134 !
00135 !cdir vector
00136                   do i = 0, levdim1
00137                   if = 2*i
00138                   if1 = min (if+1, levdim1_fine)
00139 !
00140 !     ... Compute maximum extension of coarse "grid" cell
00141 !
00142                   chcmax (i,j,k) = max (chfmax (if,   jf,  kf), &
00143                                         chfmax (if1,  jf,  kf), &
00144                                         chfmax (if,   jf1, kf), &
00145                                         chfmax (if1,  jf1, kf), &
00146                                         chfmax (if,   jf,  kf1), &
00147                                         chfmax (if1,  jf,  kf1), &
00148                                         chfmax (if,   jf1, kf1), &
00149                                         chfmax (if1,  jf1, kf1) )
00150 !
00151 !     ... Compute minimum extension of coarse "grid" cell
00152 !
00153                   chcmin (i,j,k) = min (chfmin (if,   jf,  kf), &
00154                                         chfmin (if1,  jf,  kf), &
00155                                         chfmin (if,   jf1, kf), &
00156                                         chfmin (if1,  jf1, kf), &
00157                                         chfmin (if,   jf,  kf1), &
00158                                         chfmin (if1,  jf,  kf1), &
00159                                         chfmin (if,   jf1, kf1), &
00160                                         chfmin (if1,  jf1, kf1) )
00161 !
00162 !     ... Compute mid points of coarse "grid" cell
00163 !
00164                   midcp (i,j,k) = (midfp (if,  jf,  kf) + &
00165                                       midfp (if1, jf,  kf) + &
00166                                       midfp (if,  jf1, kf) + &
00167                                       midfp (if1, jf1, kf) + &
00168                                       midfp (if,  jf,  kf1) + &
00169                                       midfp (if1, jf,  kf1) + &
00170                                       midfp (if,  jf1, kf1) + &
00171                                       midfp (if1, jf1, kf1)) * 0.125
00172 !
00173                   end do ! i
00174                end do ! j
00175             end do ! k
00176 !
00177       else if (n1 == 2) then
00178 !
00179 !-----------------------------------------------------------------------
00180 !     Special case: No coarsening in 2 directions
00181 !-----------------------------------------------------------------------
00182 !
00183          inc (:) = icoarse(:) - 1
00184 !
00185             do k = 0, levdim3
00186             kf = icoarse(3)*k
00187             kf1 = min (kf+inc(3), levdim3_fine)
00188 !
00189                do j = 0, levdim2
00190                jf = icoarse(2)*j
00191                jf1 = min (jf+inc(2), levdim2_fine)
00192 !
00193 !cdir vector
00194                   do i = 0, levdim1
00195                   if = icoarse(1)*i
00196                   if1 = min (if+inc(1), levdim1_fine)
00197 !
00198 !     ... Compute maximum extension of coarse "grid" cell
00199 !
00200                   chcmax (i,j,k) = max (chfmax (if,  jf,  kf ), &
00201                                         chfmax (if1, jf,  kf ), &
00202                                         chfmax (if,  jf1, kf ), &
00203                                         chfmax (if1, jf1, kf ), &
00204                                         chfmax (if,  jf,  kf1), &
00205                                         chfmax (if1, jf,  kf1), &
00206                                         chfmax (if,  jf1, kf1), &
00207                                         chfmax (if1, jf1, kf1) )
00208 !
00209 !     ... Compute minimum extension of coarse "grid" cell
00210 !
00211                   chcmin (i,j,k) = min (chfmin (if,  jf,  kf ), &
00212                                         chfmin (if1, jf,  kf ), &
00213                                         chfmin (if,  jf1, kf ), &
00214                                         chfmin (if1, jf1, kf ), &
00215                                         chfmin (if,  jf,  kf1), &
00216                                         chfmin (if1, jf,  kf1), &
00217                                         chfmin (if,  jf1, kf1), &
00218                                         chfmin (if1, jf1, kf1) )
00219 !
00220 !     ... Compute mid points of coarse "grid" cell
00221 !
00222                   midcp (i,j,k) = (midfp (if,  jf,  kf ) + &
00223                                    midfp (if1, jf,  kf ) + &
00224                                    midfp (if,  jf1, kf ) + &
00225                                    midfp (if1, jf1, kf ) + &
00226                                    midfp (if,  jf,  kf1) + &
00227                                    midfp (if1, jf,  kf1) + &
00228                                    midfp (if,  jf1, kf1) + &
00229                                    midfp (if1, jf1, kf1)) * 0.125
00230 !
00231                   end do ! i
00232                end do ! j
00233             end do ! k
00234 !
00235 !-----------------------------------------------------------------------
00236 !     Special case: No coarsening in any direction
00237 !-----------------------------------------------------------------------
00238 !
00239       else if (n1 == ndim_3d) then
00240 
00241          chcmin (0:levdim1,0:levdim2,0:levdim3) = &
00242          chfmin (0:levdim1,0:levdim2,0:levdim3)
00243 
00244          chcmax (0:levdim1,0:levdim2,0:levdim3) = &
00245          chfmax (0:levdim1,0:levdim2,0:levdim3)
00246 
00247          midcp  (0:levdim1,0:levdim2,0:levdim3) = &
00248          midfp  (0:levdim1,0:levdim2,0:levdim3)
00249 
00250 #ifdef UNSINN
00251          ierror = PRISM_Error_Internal
00252          call psmile_error ( ierror, 'all coarsening == 1', &
00253                              icoarse, ndim_3d, __FILE__, __LINE__ )
00254 #endif /* UNSINN */
00255 
00256 !
00257 !-----------------------------------------------------------------------
00258 !     Special case: No coarsening in I-direction
00259 !-----------------------------------------------------------------------
00260 !
00261       else if (icoarse(1) == 1) then
00262 !
00263             do k = 0, levdim3
00264             kf = icoarse(3)*k
00265             kf1 = min (kf+1, levdim3_fine)
00266 !
00267                do j = 0, levdim2
00268                jf = icoarse(2)*j
00269                jf1 = min (jf+1, levdim2_fine)
00270 !
00271 !cdir vector
00272                   do i = 0, levdim1
00273                   if = i
00274 !
00275 !     ... Compute maximum extension of coarse "grid" cell
00276 !
00277                   chcmax (i,j,k) = max (chfmax (if, jf,  kf), &
00278                                         chfmax (if, jf1, kf), &
00279                                         chfmax (if, jf,  kf1), &
00280                                         chfmax (if, jf1, kf1) )
00281 !
00282 !     ... Compute minimum extension of coarse "grid" cell
00283 !
00284                   chcmin (i,j,k) = min (chfmin (if, jf,  kf), &
00285                                         chfmin (if, jf1, kf), &
00286                                         chfmin (if, jf,  kf1), &
00287                                         chfmin (if, jf1, kf1) )
00288 !
00289 !     ... Compute mid points of coarse "grid" cell
00290 !
00291                   midcp (i,j,k) = (midfp (if, jf,  kf) + &
00292                                    midfp (if, jf1, kf) + &
00293                                    midfp (if, jf,  kf1) + &
00294                                    midfp (if, jf1, kf1)) * 0.25
00295 !
00296                   end do ! i
00297                end do ! j
00298             end do ! k
00299 !
00300 !-----------------------------------------------------------------------
00301 !     Special case: No coarsening in J-direction
00302 !-----------------------------------------------------------------------
00303 !
00304       else if (icoarse(2) == 1) then
00305 !
00306             do k = 0, levdim3
00307             kf = 2*k
00308             kf1 = min (kf+1, levdim3_fine)
00309 !
00310                do j = 0, levdim2
00311                jf = j
00312 !
00313 !cdir vector
00314                   do i = 0, levdim1
00315                   if = 2*i
00316                   if1 = min (if+1, levdim1_fine)
00317 !
00318 !     ... Compute maximum extension of coarse "grid" cell
00319 !
00320                   chcmax (i,j,k) = max (chfmax (if,  jf, kf ), &
00321                                         chfmax (if1, jf, kf ), &
00322                                         chfmax (if,  jf, kf1), &
00323                                         chfmax (if1, jf, kf1) )
00324 !
00325 !     ... Compute minimum extension of coarse "grid" cell
00326 !
00327                   chcmin (i,j,k) = min (chfmin (if,  jf, kf ), &
00328                                         chfmin (if1, jf, kf ), &
00329                                         chfmin (if,  jf, kf1), &
00330                                         chfmin (if1, jf, kf1) )
00331 !
00332 !     ... Compute mid points of coarse "grid" cell
00333 !
00334                   midcp (i,j,k) = (midfp (if,  jf, kf ) + &
00335                                    midfp (if1, jf, kf ) + &
00336                                    midfp (if,  jf, kf1) + &
00337                                    midfp (if1, jf, kf1) ) * 0.25
00338 !
00339                   end do
00340                end do
00341             end do
00342 !
00343 !-----------------------------------------------------------------------
00344 !     Special case: No coarsening in K-direction
00345 !-----------------------------------------------------------------------
00346 !
00347       else
00348 
00349 #ifdef PRISM_ASSERTION
00350             if (.not. (icoarse(3) == 1)) then
00351                call psmile_assert ( __FILE__, __LINE__, &
00352                                    'else icoarse(3)')
00353             endif
00354 #endif /* PRISM_ASSERTION */
00355 !
00356             do k = 0, levdim3
00357             kf = k
00358 !
00359                do j = 0, levdim2
00360                jf = 2*j
00361                jf1 = min (jf+1, levdim2_fine)
00362 !
00363 !cdir vector
00364                   do i = 0, levdim1
00365                   if = 2*i
00366                   if1 = min (if+1, levdim1_fine)
00367 !
00368 !     ... Compute maximum extension of coarse "grid" cell
00369 !
00370                   chcmax (i,j,k) = max (chfmax (if,  jf,  kf), &
00371                                         chfmax (if1, jf,  kf), &
00372                                         chfmax (if,  jf1, kf), &
00373                                         chfmax (if1, jf1, kf) )
00374 !
00375 !     ... Compute minimum extension of coarse "grid" cell
00376 !
00377                   chcmin (i,j,k) = min (chfmin (if,  jf,  kf), &
00378                                         chfmin (if1, jf,  kf), &
00379                                         chfmin (if,  jf1, kf), &
00380                                         chfmin (if1, jf1, kf) )
00381 !
00382 !     ... Compute mid points of coarse "grid" cell
00383 !
00384                   midcp (i,j,k) = (midfp (if,  jf,  kf) + &
00385                                    midfp (if1, jf,  kf) + &
00386                                    midfp (if,  jf1, kf) + &
00387                                    midfp (if1, jf1, kf)) * 0.25
00388 !
00389                   end do ! i
00390                end do ! j
00391             end do ! k
00392 !
00393       endif
00394 !
00395 !===> All done
00396 !
00397 #ifdef DEBUGX
00398          do k = 0, levdim3
00399             do j = 0, levdim2
00400                do i = 0, levdim1
00401                print *, 'i,j,k, chmin, chmax', i,j,k, &
00402                         chcmin(i,j,k), chcmax (i,j,k)
00403                end do
00404             end do
00405          end do
00406 #endif
00407 #ifdef VERBOSE
00408 !     print *, 'chfmin', chfmin(0,0,0), chfmin (levdim1,levdim2,levdim3)
00409 !     print *, 'chfmax', chfmax(0,0,0), chfmax (levdim1,levdim2,levdim3)
00410 !     print *, 'midfp ', midfp (0,0,0), midfp  (levdim1,levdim2,levdim3)
00411 !
00412 !     print *, 'chcmin', chcmin(0,0,0), chcmin (levdim1,levdim2,levdim3)
00413 !     print *, 'chcmax', chcmax(0,0,0), chcmax (levdim1,levdim2,levdim3)
00414 !     print *, 'midcp ', midcp (0,0,0), midcp  (levdim1,levdim2,levdim3)
00415 
00416       print *, trim(ch_id), ': PSMILe_MG_coars_subgrid_3d_real eof', &
00417                             ': ierror =', ierror
00418 
00419       call psmile_flushstd
00420 #endif /* VERBOSE */
00421 !
00422       end subroutine PSMILe_MG_coars_subgrid_3d_real