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! $Header: /home/cvsroot/LMDZ4/libf/dyn3d/diverg_gam.F,v 1.1.1.1 2004/05/19 12:53:05 lmdzadmin Exp $ |
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SUBROUTINE diverg_gam(klevel,cuvscvgam,cvuscugam,unsairegam , |
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* unsapolnga,unsapolsga, x, y, div ) |
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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 ... calcule la divergence a tous les niveaux d'1 vecteur de compos. |
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c x et y... |
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c x et y etant des composantes covariantes ... |
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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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c x et y sont des arguments d'entree pour le s-prog |
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c div est un argument de sortie pour le s-prog |
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c |
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c |
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c --------------------------------------------------------------------- |
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c |
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c ATTENTION : pendant ce s-pg , ne pas toucher au COMMON/scratch/ . |
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c |
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c --------------------------------------------------------------------- |
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c |
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c .......... variables en arguments ................... |
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c |
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guez |
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INTEGER, intent(in):: klevel |
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guez |
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REAL x( ip1jmp1,klevel ),y( ip1jm,klevel ),div( ip1jmp1,klevel ) |
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REAL cuvscvgam(ip1jm),cvuscugam(ip1jmp1),unsairegam(ip1jmp1) |
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REAL unsapolnga,unsapolsga |
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c |
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c ............... variables locales ......................... |
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REAL aiy1( iip1 ) , aiy2( iip1 ) |
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REAL sumypn,sumyps |
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INTEGER l,ij |
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c ................................................................... |
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c |
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REAL SSUM |
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c |
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c |
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DO 10 l = 1,klevel |
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c |
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DO ij = iip2, ip1jm - 1 |
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div( ij + 1, l ) = ( |
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* cvuscugam( ij+1 ) * x( ij+1,l ) - cvuscugam( ij ) * x( ij , l) + |
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* cuvscvgam(ij-iim) * y(ij-iim,l) - cuvscvgam(ij+1) * y(ij+1,l) )* |
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* unsairegam( ij+1 ) |
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ENDDO |
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c |
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c .... correction pour div( 1,j,l) ...... |
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c .... div(1,j,l)= div(iip1,j,l) .... |
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c |
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CDIR$ IVDEP |
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DO ij = iip2,ip1jm,iip1 |
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div( ij,l ) = div( ij + iim,l ) |
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ENDDO |
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c |
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c .... calcul aux poles ..... |
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c |
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DO ij = 1,iim |
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aiy1(ij) = cuvscvgam( ij ) * y( ij , l ) |
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aiy2(ij) = cuvscvgam( ij+ ip1jmi1 ) * y( ij+ ip1jmi1, l ) |
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ENDDO |
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sumypn = SSUM ( iim,aiy1,1 ) * unsapolnga |
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sumyps = SSUM ( iim,aiy2,1 ) * unsapolsga |
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c |
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DO ij = 1,iip1 |
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div( ij , l ) = - sumypn |
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div( ij + ip1jm, l ) = sumyps |
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ENDDO |
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10 CONTINUE |
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c |
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RETURN |
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END |
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