| 1 |
|
| 2 |
! $Header: /home/cvsroot/LMDZ4/libf/dyn3d/limz.F,v 1.1.1.1 2004/05/19 |
| 3 |
! 12:53:07 lmdzadmin Exp $ |
| 4 |
|
| 5 |
SUBROUTINE limz(s0, sz, sm, pente_max) |
| 6 |
|
| 7 |
! Auteurs: P.Le Van, F.Hourdin, F.Forget |
| 8 |
|
| 9 |
! ******************************************************************** |
| 10 |
! Shema d'advection " pseudo amont " . |
| 11 |
! ******************************************************************** |
| 12 |
! nq,iq,q,pbaru,pbarv,w sont des arguments d'entree pour le s-pg .... |
| 13 |
|
| 14 |
|
| 15 |
! -------------------------------------------------------------------- |
| 16 |
USE dimens_m |
| 17 |
USE paramet_m |
| 18 |
USE comconst |
| 19 |
USE disvert_m |
| 20 |
USE conf_gcm_m |
| 21 |
USE comgeom |
| 22 |
IMPLICIT NONE |
| 23 |
|
| 24 |
|
| 25 |
|
| 26 |
! Arguments: |
| 27 |
! ---------- |
| 28 |
REAL pente_max |
| 29 |
REAL s0(ip1jmp1, llm), sm(ip1jmp1, llm) |
| 30 |
REAL sz(ip1jmp1, llm) |
| 31 |
|
| 32 |
! Local |
| 33 |
! --------- |
| 34 |
|
| 35 |
INTEGER ij, l, j, i, iju, ijq, indu(ip1jmp1), niju |
| 36 |
INTEGER n0, iadvplus(ip1jmp1, llm), nl(llm) |
| 37 |
|
| 38 |
REAL q(ip1jmp1, llm) |
| 39 |
REAL dzq(ip1jmp1, llm) |
| 40 |
|
| 41 |
|
| 42 |
REAL new_m, zm |
| 43 |
REAL dzqw(ip1jmp1) |
| 44 |
REAL adzqw(ip1jmp1), dzqmax(ip1jmp1) |
| 45 |
|
| 46 |
LOGICAL extremum, first |
| 47 |
SAVE first |
| 48 |
|
| 49 |
REAL ssum, cvmgp, cvmgt |
| 50 |
INTEGER ismax, ismin |
| 51 |
EXTERNAL ssum, convflu, ismin, ismax |
| 52 |
|
| 53 |
DATA first/.TRUE./ |
| 54 |
|
| 55 |
|
| 56 |
DO l = 1, llm |
| 57 |
DO ij = 1, ip1jmp1 |
| 58 |
q(ij, l) = s0(ij, l)/sm(ij, l) |
| 59 |
dzq(ij, l) = sz(ij, l)/sm(ij, l) |
| 60 |
END DO |
| 61 |
END DO |
| 62 |
|
| 63 |
! calcul de la pente en haut et en bas de la maille |
| 64 |
DO ij = 1, ip1jmp1 |
| 65 |
DO l = 1, llm - 1 |
| 66 |
dzqw(l) = q(ij, l+1) - q(ij, l) |
| 67 |
END DO |
| 68 |
dzqw(llm) = 0. |
| 69 |
|
| 70 |
DO l = 1, llm |
| 71 |
adzqw(l) = abs(dzqw(l)) |
| 72 |
END DO |
| 73 |
|
| 74 |
! calcul de la pente maximum dans la maille en valeur absolue |
| 75 |
|
| 76 |
DO l = 2, llm - 1 |
| 77 |
dzqmax(l) = pente_max*min(adzqw(l-1), adzqw(l)) |
| 78 |
END DO |
| 79 |
|
| 80 |
! calcul de la pente avec limitation |
| 81 |
|
| 82 |
DO l = 2, llm - 1 |
| 83 |
IF (dzqw(l-1)*dzqw(l)>0. .AND. dzq(ij,l)*dzqw(l)>0.) THEN |
| 84 |
dzq(ij, l) = sign(min(abs(dzq(ij,l)),dzqmax(l)), dzq(ij,l)) |
| 85 |
ELSE |
| 86 |
! extremum local |
| 87 |
dzq(ij, l) = 0. |
| 88 |
END IF |
| 89 |
END DO |
| 90 |
|
| 91 |
DO l = 1, llm |
| 92 |
sz(ij, l) = dzq(ij, l)*sm(ij, l) |
| 93 |
END DO |
| 94 |
|
| 95 |
END DO |
| 96 |
|
| 97 |
RETURN |
| 98 |
END SUBROUTINE limz |
Parent Directory
| 
Revision Log