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TOPIC: simulation with unvariant velocities

simulation with unvariant velocities 8 years 6 months ago #21087

  • chandarrou
  • chandarrou's Avatar
hello ,
I have a problem which is I don't know exactly why I get at the the end of the simulation vectors of velocity without any dynamic or mouvement .
the cas file is joined
thinks
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simulation with unvariant velocities 8 years 6 months ago #21088

  • chandarrou
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/
/
/ TELEMAC2D Version v6p2 14 juin 2012
/ TELEMAC 2D : TEST DECROISSANCE TRACEURS
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/
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/ ENTREES-SORTIES, FICHIERS
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NOMS DES TRACEURS ='T1'

FICHIER DES RESULTATS ='r2d_trdec.slf'
FICHIER DES CONDITIONS AUX LIMITES ='week.cli'
FICHIER DE GEOMETRIE ='week.slf'
FICHIER FORTRAN ='tide.f'
/
/
/ ENTREES-SORTIES, GENERALITES
/

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/ OPTIONS GENERALES
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TITRE ='TELEMAC 2D : TEST DECROISSANCE TRACEURS'
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/ ENTREES-SORTIES, GRAPHIQUES ET LISTING
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PERIODE DE SORTIE LISTING =200
VARIABLES POUR LES SORTIES GRAPHIQUES =H,S,B,T1,U,V
PERIODE POUR LES SORTIES GRAPHIQUES =200
BILAN DE MASSE =OUI
INFORMATIONS SUR LE SOLVEUR =OUI
/
/
/ EQUATIONS
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/

PROPAGATION =OUI
CONVECTION =OUI
FORME DE LA CONVECTION =5;5;5
DIFFUSION DES VITESSES =NON
LOI DE DEGRADATION DES TRACEURS =1
NOMBRE DE TRACEURS =1
ABSCISSES DES SOURCES = 350.102
ORDONNEES DES SOURCES = 30.927
VALEURS DES TRACEURS DES SOURCES = 100
DEBITS DES SOURCES = 100
VALEURS INITIALES DES TRACEURS =0
COEFFICIENT 1 DE LA LOI DE DEGRADATION DES TRACEURS =200
COEFFICIENT D'IMPLICITATION DES TRACEURS =1.
PRECISION POUR LA DIFFUSION DES TRACEURS =1.E-10
/
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/ EQUATIONS, CONDITIONS INITIALES
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CONDITIONS INITIALES ='COTE CONSTANTE'
COTE INITIALE = 0
VITESSES IMPOSEES =-5;5;1

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/ EQUATIONS, TRACEUR
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NOMBRE DE TRACEURS =1
BANCS DECOUVRANTS = NON
LOI DE FROTTEMENT SUR LE FOND = 3
COEFFICIENT DE FROTTEMENT = 50.
MODELE DE TURBULENCE = 4
COEFFICIENT DE DIFFUSION DES VITESSES = 0.00001
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/ PARAMETRES NUMERIQUES
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NOMBRE DE PAS DE TEMPS =86400
PAS DE TEMPS =0.00000001
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/ PARAMETRES NUMERIQUES, SOLVEUR
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SOLVEUR POUR LA DIFFUSION DES TRACEURS =1
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simulation with unvariant velocities 8 years 6 months ago #21089

  • c.coulet
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hi

in order to let us test your case, please join all the required file in a zip

regards
Christophe
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simulation with unvariant velocities 8 years 6 months ago #21090

  • jmhervouet
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Hello,

Hum, I find in the steering file :

NOMBRE DE PAS DE TEMPS =86400
PAS DE TEMPS =0.00000001

Why such a small time step ? It is very likely that with such a small time step solvers find that at the requested accuracy the problem is already solved without doing any iteration, then nothing moves...

With best regards,

Jean-Michel Hervouet
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