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! |
module gradiv2_m |
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! $Header: /home/cvsroot/LMDZ4/libf/dyn3d/gradiv2.F,v 1.1.1.1 2004/05/19 12:53:07 lmdzadmin Exp $ |
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! |
IMPLICIT NONE |
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SUBROUTINE gradiv2(klevel, xcov, ycov, ld, gdx, gdy ) |
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c |
contains |
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c P. Le Van |
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c |
SUBROUTINE gradiv2(xcov, ycov, ld, gdx, gdy, cdivu) |
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c ********************************************************** |
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c ld |
! From LMDZ4/libf/dyn3d/gradiv2.F, version 1.1.1.1 2004/05/19 12:53:07 |
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c calcul de (grad (div) ) du vect. v .... |
! P. Le Van |
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c |
! Calcul de grad div du vecteur v. |
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c xcov et ycov etant les composant.covariantes de v |
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c ********************************************************** |
USE dimens_m, ONLY : iim, jjm, llm |
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c xcont , ycont et ld sont des arguments d'entree pour le s-prog |
use divergf_m, only: divergf |
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c gdx et gdy sont des arguments de sortie pour le s-prog |
USE comgeom, ONLY : cuvscvgam1, cvuscugam1, unsair_gam1, unsapolnga1, & |
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c |
unsapolsga1 |
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c |
USE filtreg_m, ONLY : filtreg |
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use dimens_m |
use nr_util, only: assert_eq, assert |
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use paramet_m |
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use comgeom |
! Composantes covariantes de v : |
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use comdissipn |
REAL, intent(in):: xcov(:, :, :) ! (iim + 1, jjm + 1, klevel) |
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IMPLICIT NONE |
REAL, intent(in):: ycov(:, :, :) ! (iim + 1, jjm, klevel) |
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c |
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c |
integer, intent(in):: ld |
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c ........ variables en arguments ........ |
REAL, intent(out):: gdx(:, :, :) ! (iim + 1, jjm + 1, klevel) |
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REAL, intent(out):: gdy(:, :, :) ! (iim + 1, jjm, klevel) |
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INTEGER klevel |
real, intent(in):: cdivu |
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REAL xcov( ip1jmp1,klevel ), ycov( ip1jm,klevel ) |
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REAL gdx( ip1jmp1,klevel ), gdy( ip1jm,klevel ) |
! Variables locales : |
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c |
REAL nugrads, div(iim + 1, jjm + 1, llm) |
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c ........ variables locales ......... |
INTEGER iter, klevel |
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c |
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REAL div(ip1jmp1,llm) |
!-------------------------------------------------------------- |
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REAL signe, nugrads |
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INTEGER l,ij,iter,ld |
call assert((/size(xcov, 1), size(ycov, 1), size(gdx, 1), size(gdy, 1)/) & |
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== iim + 1, "gradiv2 iim") |
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c ........................................................ |
call assert((/size(xcov, 2) - 1, size(ycov, 2), size(gdx, 2) - 1, & |
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c |
size(gdy, 2)/) == jjm, "gradiv2 iim") |
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c |
klevel = assert_eq(size(xcov, 3), size(ycov, 3), size(gdx, 3), & |
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CALL SCOPY( ip1jmp1 * klevel, xcov, 1, gdx, 1 ) |
size(gdy, 3), "gradiv2 klevel") |
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CALL SCOPY( ip1jm * klevel, ycov, 1, gdy, 1 ) |
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c |
gdx = xcov |
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c |
gdy = ycov |
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signe = (-1.)**ld |
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nugrads = signe * cdivu |
CALL divergf(klevel, gdx, gdy, div) |
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c |
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IF (ld > 1) THEN |
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CALL laplacien(klevel, div, div) |
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CALL divergf( klevel, gdx, gdy , div ) |
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! Itération de l'opérateur laplacien_gam |
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IF( ld.GT.1 ) THEN |
DO iter = 1, ld -2 |
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CALL laplacien_gam(klevel, cuvscvgam1, cvuscugam1, unsair_gam1, & |
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CALL laplacien ( klevel, div, div ) |
unsapolnga1, unsapolsga1, div, div) |
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END DO |
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c ...... Iteration de l'operateur laplacien_gam ....... |
ENDIF |
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DO iter = 1, ld -2 |
CALL filtreg(div, jjm + 1, klevel, 2, 1, .TRUE., 1) |
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CALL laplacien_gam ( klevel,cuvscvgam1,cvuscugam1,unsair_gam1, |
CALL grad(klevel, div, gdx, gdy) |
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* unsapolnga1, unsapolsga1, div, div ) |
nugrads = (-1.)**ld * cdivu |
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ENDDO |
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gdx = gdx * nugrads |
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ENDIF |
gdy = gdy * nugrads |
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END SUBROUTINE gradiv2 |
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CALL filtreg( div , jjp1, klevel, 2, 1, .TRUE., 1 ) |
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CALL grad ( klevel, div, gdx, gdy ) |
end module gradiv2_m |
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c |
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DO l = 1, klevel |
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DO ij = 1, ip1jmp1 |
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gdx( ij,l ) = gdx( ij,l ) * nugrads |
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ENDDO |
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DO ij = 1, ip1jm |
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gdy( ij,l ) = gdy( ij,l ) * nugrads |
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ENDDO |
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ENDDO |
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c |
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RETURN |
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END |
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