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mutRoughWallFunction not working in rhoSimpleFoam and kOmegaSST model

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Old   November 10, 2010, 13:16
Default SOLVED - mutRoughWallFunction not working in rhoSimpleFoam and kOmegaSST model
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Guilherme da Silva
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Dear All,

My mutWallFunction was working properly to simulate the flow around a cylinder with heat transfer but the mutRoughWallFunction was giving Float Point Exception..... So I found the fix and am sharing with you here because I have seen some posts about this subject.

Code:
in "/opt/openfoam171/applications/bin/linux64GccDPOpt/rhoSimpleFoam"
Floating point exception
in RASProperties
Code:
RASModel       kOmegaSST;
turbulence    on;
in boundary condition mut file
Code:
    cylinder
    {
        type            mutRoughWallFunction;
        value           uniform 0.0;
	Ks 		uniform 0.24;
	Cs 		uniform 0.5;
    }
I found the fix for the issue. It is more related to run-time execution than models, parameters or inputs. You need to code in terminal where you are running OpenFOAM:

Code:
unset FOAM_SIGFPE
or

Code:
export FOAM_SIGFPE=false

Error Floating point exception

http://www.cfd-online.com/OpenFOAM_D...tml?1201770596

Regards,

Last edited by aerothermal; November 10, 2010 at 14:04. Reason: issue solved
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cylinder, heat transfer, roughness, wall functions

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