| 1 |
C $Header: /u/gcmpack/MITgcm/pkg/shap_filt/shap_filt_uv_s2.F,v 1.11 2005/09/27 22:11:06 jmc Exp $ |
| 2 |
C $Name: $ |
| 3 |
|
| 4 |
#include "SHAP_FILT_OPTIONS.h" |
| 5 |
|
| 6 |
CBOP |
| 7 |
C !ROUTINE: SHAP_FILT_UV_S2 |
| 8 |
C !INTERFACE: |
| 9 |
SUBROUTINE SHAP_FILT_UV_S2( |
| 10 |
U uFld, vFld, tmpFldU, tmpFldV, |
| 11 |
I kSize, myTime, myThid ) |
| 12 |
C !DESCRIPTION: \bv |
| 13 |
C *==========================================================* |
| 14 |
C | S/R SHAP_FILT_UV_S2 |
| 15 |
C | o Applies Shapiro filter to velocity field (u & v). |
| 16 |
C | o use filtering function "S2" = [1 - (d_xx+d_yy)^n] |
| 17 |
C | o Options for computational filter (no grid spacing) |
| 18 |
C | or physical space filter (with grid spacing) or both. |
| 19 |
C *==========================================================* |
| 20 |
C \ev |
| 21 |
|
| 22 |
C !USES: |
| 23 |
IMPLICIT NONE |
| 24 |
|
| 25 |
C == Global variables === |
| 26 |
#include "SIZE.h" |
| 27 |
#include "EEPARAMS.h" |
| 28 |
#include "PARAMS.h" |
| 29 |
#include "GRID.h" |
| 30 |
#include "SHAP_FILT.h" |
| 31 |
#ifdef ALLOW_EXCH2 |
| 32 |
#include "W2_EXCH2_TOPOLOGY.h" |
| 33 |
#include "W2_EXCH2_PARAMS.h" |
| 34 |
#endif /* ALLOW_EXCH2 */ |
| 35 |
|
| 36 |
C !INPUT/OUTPUT PARAMETERS: |
| 37 |
C == Routine arguments |
| 38 |
C uFld :: velocity field (U component) on which filter applies |
| 39 |
C vFld :: velocity field (V component) on which filter applies |
| 40 |
C tmpFldU :: working temporary array |
| 41 |
C tmpFldV :: working temporary array |
| 42 |
C kSize :: length of 3rd Dim : either =1 (2D field) or =Nr (3D field) |
| 43 |
C myTime :: Current time in simulation |
| 44 |
C myThid :: Thread number for this instance of SHAP_FILT_UV_S2 |
| 45 |
INTEGER kSize |
| 46 |
_RL uFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,kSize,nSx,nSy) |
| 47 |
_RL vFld(1-OLx:sNx+OLx,1-OLy:sNy+OLy,kSize,nSx,nSy) |
| 48 |
_RL tmpFldU(1-OLx:sNx+OLx,1-OLy:sNy+OLy,kSize,nSx,nSy) |
| 49 |
_RL tmpFldV(1-OLx:sNx+OLx,1-OLy:sNy+OLy,kSize,nSx,nSy) |
| 50 |
_RL myTime |
| 51 |
INTEGER myThid |
| 52 |
|
| 53 |
#ifdef ALLOW_SHAP_FILT |
| 54 |
|
| 55 |
C------ |
| 56 |
C Combine computational Filter of Div & Vorticity |
| 57 |
C and Physical Filter of U,V field |
| 58 |
C nShapUVPhys = 0 ==> use only computational Filter |
| 59 |
C nShapUVPhys = 1 ==> compute Div & Vort. with Grid factors, |
| 60 |
C Filter Div & Vort. Numerically (power nShapUV-1) |
| 61 |
C and return filtered U.V in physical space |
| 62 |
C nShapUVPhys = nShapUV ==> Filter in Physical space only (power nShapUV) |
| 63 |
C------ |
| 64 |
|
| 65 |
C !LOCAL VARIABLES: |
| 66 |
C == Local variables == |
| 67 |
INTEGER bi,bj,k,i,j,n |
| 68 |
_RS hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 69 |
_RS r_hFacZ(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 70 |
_RL hDiv(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 71 |
_RL vort3(1-OLx:sNx+OLx,1-OLy:sNy+OLy) |
| 72 |
CEOP |
| 73 |
|
| 74 |
IF (nShapUV.GT.0 .AND. Shap_uvtau.GT.0.) THEN |
| 75 |
|
| 76 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 77 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 78 |
DO k=1,kSize |
| 79 |
DO j=1-Oly,sNy+Oly |
| 80 |
DO i=1-Olx,sNx+Olx |
| 81 |
tmpFldU(i,j,k,bi,bj)=uFld(i,j,k,bi,bj) |
| 82 |
& *_maskW(i,j,k,bi,bj) |
| 83 |
tmpFldV(i,j,k,bi,bj)=vFld(i,j,k,bi,bj) |
| 84 |
& *_maskS(i,j,k,bi,bj) |
| 85 |
ENDDO |
| 86 |
ENDDO |
| 87 |
ENDDO |
| 88 |
ENDDO |
| 89 |
ENDDO |
| 90 |
|
| 91 |
c---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 92 |
|
| 93 |
C-- [d_xx+d_yy]^n tmpFld |
| 94 |
|
| 95 |
DO n=1,nShapUV |
| 96 |
|
| 97 |
IF ( MOD(n,2).EQ.1 .OR. Shap_alwaysExchUV ) THEN |
| 98 |
IF (kSize.EQ.Nr) THEN |
| 99 |
CALL EXCH_UV_XYZ_RL(tmpFldU,tmpFldV,.TRUE.,myThid) |
| 100 |
ELSEIF (kSize.EQ.1) THEN |
| 101 |
CALL EXCH_UV_XY_RL(tmpFldU,tmpFldV,.TRUE.,myThid) |
| 102 |
ELSE |
| 103 |
STOP 'S/R SHAP_FILT_UV_S2: kSize is wrong' |
| 104 |
ENDIF |
| 105 |
ENDIF |
| 106 |
|
| 107 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 108 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 109 |
DO k=1,kSize |
| 110 |
|
| 111 |
IF ( n.LE.nShapUVPhys .OR. |
| 112 |
& n.GT.nShapUV-nShapUVPhys ) |
| 113 |
& CALL MOM_CALC_HFACZ(bi,bj,k,hFacZ,r_hFacZ,myThid) |
| 114 |
|
| 115 |
C- [d_xx+d_yy] tmpFld |
| 116 |
IF (n.LE.nShapUVPhys) THEN |
| 117 |
CALL MOM_CALC_HDIV(bi,bj,k,2, |
| 118 |
I tmpFldU(1-OLx,1-OLy,k,bi,bj), |
| 119 |
I tmpFldV(1-OLx,1-OLy,k,bi,bj), |
| 120 |
& hDiv,myThid) |
| 121 |
#ifdef USE_SHAP_CALC_VORTICITY |
| 122 |
CALL SHAP_FILT_RELVORT3(bi,bj,k, |
| 123 |
I tmpFldU(1-OLx,1-OLy,k,bi,bj), |
| 124 |
I tmpFldV(1-OLx,1-OLy,k,bi,bj), |
| 125 |
& hFacZ,vort3,myThid) |
| 126 |
#else |
| 127 |
CALL MOM_CALC_RELVORT3(bi,bj,k, |
| 128 |
I tmpFldU(1-OLx,1-OLy,k,bi,bj), |
| 129 |
I tmpFldV(1-OLx,1-OLy,k,bi,bj), |
| 130 |
& hFacZ,vort3,myThid) |
| 131 |
#endif |
| 132 |
ELSE |
| 133 |
C- replace Physical calc Div & Vort by computational one : |
| 134 |
DO j=2-Oly,sNy+Oly-1 |
| 135 |
DO i=2-Olx,sNx+Olx-1 |
| 136 |
hDiv(i,j)=(tmpFldU(i+1,j,k,bi,bj)-tmpFldU(i,j,k,bi,bj)) |
| 137 |
& +(tmpFldV(i,j+1,k,bi,bj)-tmpFldV(i,j,k,bi,bj)) |
| 138 |
ENDDO |
| 139 |
ENDDO |
| 140 |
CALL SHAP_FILT_COMPUTVORT( |
| 141 |
I tmpFldU(1-OLx,1-OLy,k,bi,bj), |
| 142 |
I tmpFldV(1-OLx,1-OLy,k,bi,bj), |
| 143 |
O vort3, |
| 144 |
I k,bi,bj,myThid) |
| 145 |
ENDIF |
| 146 |
|
| 147 |
c---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 148 |
|
| 149 |
IF (n.GT.nShapUV-nShapUVPhys) THEN |
| 150 |
IF (Shap_uvLength.LT.0.) THEN |
| 151 |
DO j=2-Oly,sNy+Oly-1 |
| 152 |
DO i=2-Olx,sNx+Olx-1 |
| 153 |
hDiv(i,j) = hDiv(i,j) * rA(i,j,bi,bj) |
| 154 |
vort3(i,j)= vort3(i,j)*rAz(i,j,bi,bj) |
| 155 |
ENDDO |
| 156 |
ENDDO |
| 157 |
ENDIF |
| 158 |
CALL MOM_VI_DEL2UV( |
| 159 |
I bi,bj,k,hDiv,vort3,hFacZ, |
| 160 |
O tmpFldU(1-OLx,1-OLy,k,bi,bj), |
| 161 |
O tmpFldV(1-OLx,1-OLy,k,bi,bj), |
| 162 |
I myThid) |
| 163 |
IF (Shap_uvLength.LT.0.) THEN |
| 164 |
DO j=3-Oly,sNy+Oly-1 |
| 165 |
DO i=3-Olx,sNx+Olx-1 |
| 166 |
tmpFldU(i,j,k,bi,bj) = -0.125 _d 0*tmpFldU(i,j,k,bi,bj) |
| 167 |
& *_maskW(i,j,k,bi,bj) |
| 168 |
tmpFldV(i,j,k,bi,bj) = -0.125 _d 0*tmpFldV(i,j,k,bi,bj) |
| 169 |
& *_maskS(i,j,k,bi,bj) |
| 170 |
ENDDO |
| 171 |
ENDDO |
| 172 |
ELSEIF (Shap_uvLength.EQ.0.) THEN |
| 173 |
DO j=3-Oly,sNy+Oly-1 |
| 174 |
DO i=3-Olx,sNx+Olx-1 |
| 175 |
tmpFldU(i,j,k,bi,bj) = -0.125 _d 0*tmpFldU(i,j,k,bi,bj) |
| 176 |
& *rAw(i,j,bi,bj)*_maskW(i,j,k,bi,bj) |
| 177 |
tmpFldV(i,j,k,bi,bj) = -0.125 _d 0*tmpFldV(i,j,k,bi,bj) |
| 178 |
& *rAs(i,j,bi,bj)*_maskS(i,j,k,bi,bj) |
| 179 |
ENDDO |
| 180 |
ENDDO |
| 181 |
ELSE |
| 182 |
DO j=3-Oly,sNy+Oly-1 |
| 183 |
DO i=3-Olx,sNx+Olx-1 |
| 184 |
tmpFldU(i,j,k,bi,bj) = -0.125 _d 0*tmpFldU(i,j,k,bi,bj) |
| 185 |
& *Shap_uvLength*Shap_uvLength*_maskW(i,j,k,bi,bj) |
| 186 |
tmpFldV(i,j,k,bi,bj) = -0.125 _d 0*tmpFldV(i,j,k,bi,bj) |
| 187 |
& *Shap_uvLength*Shap_uvLength*_maskS(i,j,k,bi,bj) |
| 188 |
ENDDO |
| 189 |
ENDDO |
| 190 |
ENDIF |
| 191 |
ELSE |
| 192 |
C- replace derivatives in physical space of Div & Vort by computational ones: |
| 193 |
#ifndef ALLOW_AUTODIFF_TAMC |
| 194 |
IF ( .NOT.Shap_alwaysExchUV |
| 195 |
& .AND. useCubedSphereExchange ) THEN |
| 196 |
C to compute d/dx(hDiv), fill corners with appropriate values: |
| 197 |
CALL FILL_CS_CORNER_TR_RL( .TRUE., hDiv, bi,bj, myThid ) |
| 198 |
ENDIF |
| 199 |
#endif |
| 200 |
DO j=3-Oly,sNy+Oly-2 |
| 201 |
DO i=3-Olx,sNx+Olx-1 |
| 202 |
tmpFldU(i,j,k,bi,bj) = -0.125 _d 0* |
| 203 |
& ( (hDiv(i,j) - hDiv(i-1,j)) |
| 204 |
& -(vort3(i,j+1)-vort3(i,j)) |
| 205 |
& )*maskW(i,j,k,bi,bj) |
| 206 |
ENDDO |
| 207 |
ENDDO |
| 208 |
#ifndef ALLOW_AUTODIFF_TAMC |
| 209 |
IF ( .NOT.Shap_alwaysExchUV |
| 210 |
& .AND. useCubedSphereExchange ) THEN |
| 211 |
C to compute d/dy(hDiv), fill corners with appropriate values: |
| 212 |
CALL FILL_CS_CORNER_TR_RL(.FALSE., hDiv, bi,bj, myThid ) |
| 213 |
ENDIF |
| 214 |
#endif |
| 215 |
DO j=3-Oly,sNy+Oly-1 |
| 216 |
DO i=3-Olx,sNx+Olx-2 |
| 217 |
tmpFldV(i,j,k,bi,bj) = -0.125 _d 0* |
| 218 |
& ( (hDiv(i,j) - hDiv(i,j-1)) |
| 219 |
& +(vort3(i+1,j)-vort3(i,j)) |
| 220 |
& )*maskS(i,j,k,bi,bj) |
| 221 |
ENDDO |
| 222 |
ENDDO |
| 223 |
|
| 224 |
ENDIF |
| 225 |
|
| 226 |
C end loops k / bi / bj |
| 227 |
ENDDO |
| 228 |
ENDDO |
| 229 |
ENDDO |
| 230 |
C end loop n=1,nShapUV |
| 231 |
ENDDO |
| 232 |
|
| 233 |
c---+----1----+----2----+----3----+----4----+----5----+----6----+----7-|--+----| |
| 234 |
|
| 235 |
C F <- [1 - (d_xx+d_yy)^n *deltaT/tau].F |
| 236 |
DO bj=myByLo(myThid),myByHi(myThid) |
| 237 |
DO bi=myBxLo(myThid),myBxHi(myThid) |
| 238 |
DO k=1,kSize |
| 239 |
DO j=1,sNy |
| 240 |
DO i=1,sNx+1 |
| 241 |
uFld(i,j,k,bi,bj)=uFld(i,j,k,bi,bj) |
| 242 |
& -tmpFldU(i,j,k,bi,bj)*deltaTmom/Shap_uvtau |
| 243 |
tmpFldU(i,j,k,bi,bj)= -tmpFldU(i,j,k,bi,bj)/Shap_uvtau |
| 244 |
ENDDO |
| 245 |
ENDDO |
| 246 |
DO j=1,sNy+1 |
| 247 |
DO i=1,sNx |
| 248 |
vFld(i,j,k,bi,bj)=vFld(i,j,k,bi,bj) |
| 249 |
& -tmpFldV(i,j,k,bi,bj)*deltaTmom/Shap_uvtau |
| 250 |
tmpFldV(i,j,k,bi,bj)= -tmpFldV(i,j,k,bi,bj)/Shap_uvtau |
| 251 |
ENDDO |
| 252 |
ENDDO |
| 253 |
ENDDO |
| 254 |
ENDDO |
| 255 |
ENDDO |
| 256 |
|
| 257 |
c IF (kSize.EQ.Nr) THEN |
| 258 |
c CALL EXCH_UV_XYZ_RL(uFld,vFld,.TRUE.,myThid) |
| 259 |
c ELSEIF (kSize.EQ.1) THEN |
| 260 |
c CALL EXCH_UV_XY_RL(uFld,vFld,.TRUE.,myThid) |
| 261 |
c ELSE |
| 262 |
c STOP 'S/R SHAP_FILT_UV_S2: kSize is wrong' |
| 263 |
c ENDIF |
| 264 |
|
| 265 |
ENDIF |
| 266 |
#endif /* ALLOW_SHAP_FILT */ |
| 267 |
|
| 268 |
RETURN |
| 269 |
END |
Parent Directory
| 
Revision Log
| 
Revision Graph