# Flouting point exception twoPhaseEulerFoam - I set delta t

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 May 16, 2011, 09:28 Flouting point exception twoPhaseEulerFoam - I set delta t #1 New Member   Join Date: Mar 2011 Posts: 13 Rep Power: 6 Hi, I receive the Flouting point exception when and I don't know why because I calculated delta t according the formula from tutorial and I set it in controlDict. I have the velocity on OX direction - from 0 to 12 so 13 is the d dimension and I have 20 cells on OX direction => delta x = 0.65. The velocity is (1 0 0) so I set my delta t to 0.65. The Co number I set to be max 0.2. I attached also my case. Starting time loop Courant Number mean: 0 max: -0 Max Ur Courant Number = -0 deltaT = 0.65 Time = 0.65 DILUPBiCG: Solving for alpha, Initial residual = 1, Final residual = 6.93889e-18, No Iterations 1 Dispersed phase volume fraction = 7.38636e+295 Min(alpha) = 0 Max(alpha) = 1.1375e+298 #0 Foam::error:rintStack(Foam::Ostream&) in "/opt/openfoam170/lib/linuxGccDPOpt/libOpenFOAM.so" #1 Foam::sigFpe::sigFpeHandler(int) in "/opt/openfoam170/lib/linuxGccDPOpt/libOpenFOAM.so" #2 Uninterpreted: #3 Foam::fv::gaussGrad::grad(Foam::GeometricF ield const&) in "/opt/openfoam170/lib/linuxGccDPOpt/libfiniteVolume.so" #4 Foam::fv::gaussGrad::grad(Foam::GeometricF ield const&) const in "/opt/openfoam170/lib/linuxGccDPOpt/libfiniteVolume.so" #5 Foam::tmp, double>::type, Foam::fvPatchField, Foam::volMesh> > Foam::fvc::grad(Foam::GeometricField const&, Foam::word const&) in "/opt/openfoam170/applications/bin/linuxGccDPOpt/twoPhaseEulerFoam" #6 Foam::tmp, double>::type, Foam::fvPatchField, Foam::volMesh> > Foam::fvc::grad(Foam::GeometricField const&) in "/opt/openfoam170/applications/bin/linuxGccDPOpt/twoPhaseEulerFoam" #7 Foam::LimitedScheme >, Foam::limitFuncs::magSqr>::limiter(Foam::Geometric Field const&) const in "/opt/openfoam170/lib/linuxGccDPOpt/libfiniteVolume.so" #8 Foam::limitedSurfaceInterpolationScheme::w eights(Foam::GeometricField const&) const in "/opt/openfoam170/lib/linuxGccDPOpt/libfiniteVolume.so" #9 Foam::surfaceInterpolationScheme::interpol ate(Foam::GeometricField const&) const in "/opt/openfoam170/lib/linuxGccDPOpt/libfiniteVolume.so" #10 Foam::fv::gaussConvectionScheme::interpola te(Foam::GeometricField const&, Foam::GeometricField const&) const in "/opt/openfoam170/lib/linuxGccDPOpt/libfiniteVolume.so" #11 Foam::fv::gaussConvectionScheme::flux(Foam ::GeometricField const&, Foam::GeometricField const&) const in "/opt/openfoam170/lib/linuxGccDPOpt/libfiniteVolume.so" #12 in "/opt/openfoam170/applications/bin/linuxGccDPOpt/twoPhaseEulerFoam" #13 in "/opt/openfoam170/applications/bin/linuxGccDPOpt/twoPhaseEulerFoam" #14 __libc_start_main in "/lib/libc.so.6" #15 in "/opt/openfoam170/applications/bin/linuxGccDPOpt/twoPhaseEulerFoam" Floating point exception Cristina

 May 26, 2011, 15:35 #2 Member   Freeman Adane Join Date: Apr 2010 Posts: 42 Rep Power: 7 Cristina, I think you might probably have an issue with your case setup itself and not the dt based on the error. Check your BCs, transportproperties, etc to make sure that everything is alright. BTW, NO test case file was attached to your posting.

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