/[lmdze]/trunk/libf/dyn3d/Dissipation/nxgraro2.f
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Contents of /trunk/libf/dyn3d/Dissipation/nxgraro2.f

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Revision 3 - (show annotations)
Wed Feb 27 13:16:39 2008 UTC (16 years, 2 months ago) by guez
Original Path: trunk/libf/dyn3d/nxgraro2.f
File size: 1851 byte(s)
Initial import
1 !
2 ! $Header: /home/cvsroot/LMDZ4/libf/dyn3d/nxgraro2.F,v 1.1.1.1 2004/05/19 12:53:06 lmdzadmin Exp $
3 !
4 SUBROUTINE nxgraro2 (klevel,xcov, ycov, lr, grx, gry )
5 c
6 c P.Le Van .
7 c ***********************************************************
8 c lr
9 c calcul de ( nxgrad (rot) ) du vect. v ....
10 c
11 c xcov et ycov etant les compos. covariantes de v
12 c ***********************************************************
13 c xcov , ycov et lr sont des arguments d'entree pour le s-prog
14 c grx et gry sont des arguments de sortie pour le s-prog
15 c
16 c
17 use dimens_m
18 use paramet_m
19 IMPLICIT NONE
20 c
21 include "comdissipn.h"
22 c
23 c ...... variables en arguments .......
24 c
25 INTEGER klevel
26 REAL xcov( ip1jmp1,klevel ), ycov( ip1jm,klevel )
27 REAL grx( ip1jmp1,klevel ), gry( ip1jm,klevel )
28 c
29 c ...... variables locales ........
30 c
31 REAL rot(ip1jm,llm) , signe, nugradrs
32 INTEGER l,ij,iter,lr
33 c ........................................................
34 c
35 c
36 c
37 signe = (-1.)**lr
38 nugradrs = signe * crot
39 c
40 CALL SCOPY ( ip1jmp1* klevel, xcov, 1, grx, 1 )
41 CALL SCOPY ( ip1jm * klevel, ycov, 1, gry, 1 )
42 c
43 CALL rotatf ( klevel, grx, gry, rot )
44 c
45 CALL laplacien_rot ( klevel, rot, rot,grx,gry )
46
47 c
48 c ..... Iteration de l'operateur laplacien_rotgam .....
49 c
50 DO iter = 1, lr -2
51 CALL laplacien_rotgam ( klevel, rot, rot )
52 ENDDO
53 c
54 c
55 CALL filtreg( rot, jjm, klevel, 2,1, .FALSE.,1)
56 CALL nxgrad ( klevel, rot, grx, gry )
57 c
58 DO l = 1, klevel
59 DO ij = 1, ip1jm
60 gry( ij,l ) = gry( ij,l ) * nugradrs
61 ENDDO
62 DO ij = 1, ip1jmp1
63 grx( ij,l ) = grx( ij,l ) * nugradrs
64 ENDDO
65 ENDDO
66 c
67 RETURN
68 END

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