[hamid1]

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?

[shk12345]

the requirement is 0.25 for courunt number

you should have it below that value for a good solution.

[hamid1]

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

[shk12345]

it is a fuction of cell size and time step only
it works fine only in unsteady state

regards
shk

[Kanarya]

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