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Old   January 25, 2012, 10:34
Default courant number
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hamid
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Dear All

What is the acceptable courant number in simulation for VOF?
if it increases but still there is convergance should I decrease the time step?
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Old   January 25, 2012, 10:42
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shoeb khan
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the requirement is 0.25 for courunt number

you should have it below that value for a good solution.
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Old   January 25, 2012, 11:45
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thanks for reply,
so far the criteria i was familiar with, were grid independence study and time step independence study,
is courant number just representative of them or anything else,
thanks again
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Old   January 25, 2012, 12:08
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it is a fuction of cell size and time step only
it works fine only in unsteady state

regards
shk
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Old   February 2, 2012, 08:24
Default controlDict Error
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Hi

I am gettin this message

Can somebody help me?

Foam::fvsPatchField, Foam::surfaceMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) const in "/opt/openfoam210/platforms/linux64GccDPOpt/lib/libfiniteVolume.so"
#6
at twoPhaseEulerFoam.C:0
#7
in "/opt/openfoam210/platforms/linux64GccDPOpt/bin/twoPhaseEulerFoam"
#8
in "/opt/openfoam210/platforms/linux64GccDPOpt/bin/twoPhaseEulerFoam"
#9 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#10
in "/opt/openfoam210/platforms/linux64GccDPOpt/bin/twoPhaseEulerFoam"
Floating point exception

Thanks,

Recep
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