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contains |
contains |
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SUBROUTINE gradiv2(klevel, xcov, ycov, ld, gdx, gdy, cdivu) |
SUBROUTINE gradiv2(xcov, ycov, ld, gdx, gdy, cdivu) |
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! From LMDZ4/libf/dyn3d/gradiv2.F, version 1.1.1.1 2004/05/19 12:53:07 |
! From LMDZ4/libf/dyn3d/gradiv2.F, version 1.1.1.1 2004/05/19 12:53:07 |
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! P. Le Van |
! P. Le Van |
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! calcul de grad div du vecteur v |
! Calcul du gradient de la divergence du vecteur v. |
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! xcov et ycov etant les composantes covariantes de v |
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! xcont, ycont et ld sont des arguments d'entree pour le sous-programme |
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! gdx et gdy sont des arguments de sortie pour le sous-programme |
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use dimens_m |
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use paramet_m |
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use comgeom |
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use filtreg_m, only: filtreg |
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! variables en arguments |
USE comgeom, ONLY: cuvscvgam1, cvuscugam1, unsair_gam1, unsapolnga1, & |
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unsapolsga1 |
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USE dimens_m, ONLY: iim, jjm, llm |
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use divergf_m, only: divergf |
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USE filtreg_m, ONLY: filtreg |
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use grad_m, only: grad |
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use laplacien_m, only: laplacien |
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use nr_util, only: assert_eq, assert |
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! Composantes covariantes de v : |
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REAL, intent(in):: xcov(:, :, :) ! (iim + 1, jjm + 1, klevel) |
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REAL, intent(in):: ycov(:, :, :) ! (iim + 1, jjm, klevel) |
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INTEGER klevel |
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REAL xcov( ip1jmp1,klevel), ycov( ip1jm,klevel) |
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integer, intent(in):: ld |
integer, intent(in):: ld |
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REAL gdx( ip1jmp1,klevel), gdy( ip1jm,klevel) |
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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real, intent(in):: cdivu |
real, intent(in):: cdivu |
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! variables locales |
! Variables locales : |
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REAL nugrads, div(iim + 1, jjm + 1, llm) |
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REAL div(ip1jmp1,llm) |
INTEGER iter, klevel |
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REAL nugrads |
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INTEGER l,ij,iter |
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!-------------------------------------------------------------- |
!-------------------------------------------------------------- |
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CALL SCOPY( ip1jmp1 * klevel, xcov, 1, gdx, 1) |
call assert((/size(xcov, 1), size(ycov, 1), size(gdx, 1), size(gdy, 1)/) & |
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CALL SCOPY( ip1jm * klevel, ycov, 1, gdy, 1) |
== iim + 1, "gradiv2 iim") |
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call assert((/size(xcov, 2) - 1, size(ycov, 2), size(gdx, 2) - 1, & |
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size(gdy, 2)/) == jjm, "gradiv2 iim") |
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klevel = assert_eq(size(xcov, 3), size(ycov, 3), size(gdx, 3), & |
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size(gdy, 3), "gradiv2 klevel") |
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CALL divergf( klevel, gdx, gdy, div) |
CALL divergf(klevel, xcov, ycov, div) |
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IF( ld.GT.1) THEN |
IF (ld > 1) THEN |
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CALL laplacien ( klevel, div, div) |
CALL laplacien(klevel, div) |
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! Iteration de l'operateur laplacien_gam |
! Itération de l'opérateur laplacien_gam |
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DO iter = 1, ld -2 |
DO iter = 1, ld -2 |
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CALL laplacien_gam ( klevel,cuvscvgam1,cvuscugam1,unsair_gam1, & |
CALL laplacien_gam(klevel, cuvscvgam1, cvuscugam1, unsair_gam1, & |
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unsapolnga1, unsapolsga1, div, div) |
unsapolnga1, unsapolsga1, div, div) |
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ENDDO |
END DO |
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ENDIF |
ENDIF |
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CALL filtreg( div, jjp1, klevel, 2, 1, .TRUE., 1) |
CALL filtreg(div, jjm + 1, klevel, 2, 1, .TRUE.) |
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CALL grad ( klevel, div, gdx, gdy) |
CALL grad(klevel, div, gdx, gdy) |
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nugrads = (-1.)**ld * cdivu |
nugrads = (-1.)**ld * cdivu |
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DO l = 1, klevel |
gdx = gdx * nugrads |
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DO ij = 1, ip1jmp1 |
gdy = gdy * nugrads |
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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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END SUBROUTINE gradiv2 |
END SUBROUTINE gradiv2 |
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