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March 7, 2011, 04:31 |
sonicFoam Floating point exception error
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#1 |
New Member
Ishan
Join Date: Jan 2011
Posts: 13
Rep Power: 15 |
Hi,
I am simulating a flow through an scramjet engine at mach 8, using sonicFoam. But after some time following error is occurring. Please help!!!! ................................................. Time = 0.00024255 Courant Number mean: 0.0475651 max: 0.808556 diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 DILUPBiCG: Solving for Ux, Initial residual = 0.000293126, Final residual = 3.26321e-07, No Iterations 1 DILUPBiCG: Solving for Uy, Initial residual = 0.00306495, Final residual = 7.17495e-06, No Iterations 1 DILUPBiCG: Solving for e, Initial residual = 0.000711042, Final residual = 5.25245e-07, No Iterations 1 #0 Foam::error:rintStack(Foam::Ostream&) in "/home/ishan/OpenFOAM/OpenFOAM-1.7.0/lib/linuxGccDPOpt/libOpenFOAM.so" #1 Foam::sigFpe::sigFpeHandler(int) in "/home/ishan/OpenFOAM/OpenFOAM-1.7.0/lib/linuxGccDPOpt/libOpenFOAM.so" #2 Uninterpreted: #3 Foam::ePsiThermo<Foam:ureMixture<Foam::sutherlan dTransport<Foam::specieThermo<Foam::hConstThermo<F oam:erfectGas> > > > >::calculate() in "/home/ishan/OpenFOAM/OpenFOAM-1.7.0/lib/linuxGccDPOpt/libbasicThermophysicalModels.so" #4 Foam::ePsiThermo<Foam:ureMixture<Foam::sutherlan dTransport<Foam::specieThermo<Foam::hConstThermo<F oam:erfectGas> > > > >::correct() in "/home/ishan/OpenFOAM/OpenFOAM-1.7.0/lib/linuxGccDPOpt/libbasicThermophysicalModels.so" #5 in "/home/ishan/OpenFOAM/OpenFOAM-1.7.0/applications/bin/linuxGccDPOpt/sonicFoam" #6 __libc_start_main in "/lib/tls/i686/cmov/libc.so.6" #7 in "/home/ishan/OpenFOAM/OpenFOAM-1.7.0/applications/bin/linuxGccDPOpt/sonicFoam" Floating point exception ............................................ Thanks Regards, Ishan |
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March 7, 2011, 07:12 |
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#2 |
Senior Member
Christian Lucas
Join Date: Aug 2009
Location: Braunschweig, Germany
Posts: 202
Rep Power: 18 |
Hi,
if your Mach number is around 8, I'm not sure if a pressure based compressible solver can solve your problem. Why not use rhoCentralFoam (density based compressible solver). Regards, Christian |
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March 7, 2011, 09:41 |
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#3 |
New Member
Ishan
Join Date: Jan 2011
Posts: 13
Rep Power: 15 |
Hi Christian,
I tried using rhoCentralFoam but it is also giving the same error. Can it be coming due to DeltaT?? Right now it is 1e-07, do I need to reduce it more? Thanks regards, Ishan |
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February 8, 2012, 05:07 |
Floating error
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#4 |
Member
Join Date: Jan 2012
Posts: 58
Rep Power: 14 |
Hello
i am getting floating error:invalid number. I am working on train travelling in tunnel. Can any body help me. My email is sheikhnasir39@gmail.com please help me thanks with regards |
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Tags |
floating point error, scramjet, sonicfoam, supersonic flow |
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