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! $Header: /home/cvsroot/LMDZ4/libf/dyn3d/nxgraro2.F,v 1.1.1.1 2004/05/19 12:53:06 lmdzadmin Exp $ |
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SUBROUTINE nxgraro2 (klevel,xcov, ycov, lr, grx, gry ) |
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c P.Le Van . |
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c *********************************************************** |
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c lr |
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c calcul de ( nxgrad (rot) ) du vect. v .... |
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c xcov et ycov etant les compos. covariantes de v |
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c *********************************************************** |
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c xcov , ycov et lr sont des arguments d'entree pour le s-prog |
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c grx et gry sont des arguments de sortie pour le s-prog |
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use dimens_m |
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use paramet_m |
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IMPLICIT NONE |
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include "comdissipn.h" |
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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 grx( ip1jmp1,klevel ), gry( ip1jm,klevel ) |
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c ...... variables locales ........ |
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REAL rot(ip1jm,llm) , signe, nugradrs |
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INTEGER l,ij,iter,lr |
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c ........................................................ |
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signe = (-1.)**lr |
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nugradrs = signe * crot |
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CALL SCOPY ( ip1jmp1* klevel, xcov, 1, grx, 1 ) |
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CALL SCOPY ( ip1jm * klevel, ycov, 1, gry, 1 ) |
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CALL rotatf ( klevel, grx, gry, rot ) |
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CALL laplacien_rot ( klevel, rot, rot,grx,gry ) |
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c ..... Iteration de l'operateur laplacien_rotgam ..... |
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DO iter = 1, lr -2 |
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CALL laplacien_rotgam ( klevel, rot, rot ) |
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ENDDO |
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CALL filtreg( rot, jjm, klevel, 2,1, .FALSE.,1) |
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CALL nxgrad ( klevel, rot, grx, gry ) |
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DO l = 1, klevel |
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DO ij = 1, ip1jm |
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gry( ij,l ) = gry( ij,l ) * nugradrs |
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ENDDO |
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DO ij = 1, ip1jmp1 |
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grx( ij,l ) = grx( ij,l ) * nugradrs |
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ENDDO |
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ENDDO |
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RETURN |
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END |