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January 25, 2012, 09:34 |
courant number
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#1 |
Senior Member
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15 |
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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January 25, 2012, 09:42 |
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#2 |
Senior Member
shoeb khan
Join Date: Nov 2011
Posts: 179
Rep Power: 14 |
the requirement is 0.25 for courunt number
you should have it below that value for a good solution. |
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January 25, 2012, 10:45 |
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#3 |
Senior Member
hamid
Join Date: Nov 2010
Posts: 185
Rep Power: 15 |
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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January 25, 2012, 11:08 |
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#4 |
Senior Member
shoeb khan
Join Date: Nov 2011
Posts: 179
Rep Power: 14 |
it is a fuction of cell size and time step only
it works fine only in unsteady state regards shk |
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February 2, 2012, 07:24 |
controlDict Error
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#5 |
Senior Member
Join Date: May 2011
Posts: 231
Rep Power: 15 |
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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