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guez |
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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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SUBROUTINE gradiv2(klevel, xcov, ycov, ld, gdx, gdy ) |
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c |
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c P. Le Van |
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c |
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c ********************************************************** |
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c ld |
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c calcul de (grad (div) ) du vect. v .... |
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c |
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c xcov et ycov etant les composant.covariantes de v |
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c ********************************************************** |
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c xcont , ycont et ld sont des arguments d'entree pour le s-prog |
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c gdx et gdy sont des arguments de sortie pour le s-prog |
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c |
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c |
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use dimens_m |
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use paramet_m |
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use comgeom |
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IMPLICIT NONE |
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c |
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include "comdissipn.h" |
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c |
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c ........ variables en arguments ........ |
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INTEGER klevel |
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REAL xcov( ip1jmp1,klevel ), ycov( ip1jm,klevel ) |
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REAL gdx( ip1jmp1,klevel ), gdy( ip1jm,klevel ) |
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c |
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c ........ variables locales ......... |
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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 |
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c ........................................................ |
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c |
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c |
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CALL SCOPY( ip1jmp1 * klevel, xcov, 1, gdx, 1 ) |
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CALL SCOPY( ip1jm * klevel, ycov, 1, gdy, 1 ) |
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c |
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c |
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signe = (-1.)**ld |
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nugrads = signe * cdivu |
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c |
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CALL divergf( klevel, gdx, gdy , div ) |
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IF( ld.GT.1 ) THEN |
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CALL laplacien ( klevel, div, div ) |
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c ...... Iteration de l'operateur laplacien_gam ....... |
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DO iter = 1, ld -2 |
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CALL laplacien_gam ( klevel,cuvscvgam1,cvuscugam1,unsair_gam1, |
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* unsapolnga1, unsapolsga1, div, div ) |
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ENDDO |
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ENDIF |
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CALL filtreg( div , jjp1, klevel, 2, 1, .TRUE., 1 ) |
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CALL grad ( klevel, div, gdx, gdy ) |
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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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