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SonicFoam forwardStepTutorial doesnbt complete the run |
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June 10, 2007, 14:44 |
Description: The forwardStep t
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#1 |
Senior Member
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,912
Rep Power: 36 |
Description: The forwardStep tutorial of sonicFoam doesn't complete the simulation and aborts with the error:
Courant Number mean: -8.55342e+25 max: 1.66084e+28 diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0 #0 Foam::error::printStack(Foam:stream&) #1 Foam::sigFpe::sigFpeHandler(int) #2 Uninterpreted: [0xffffe420] #3 Foam::DILUPreconditioner::DILUPreconditioner(Foam: :lduMatrix::solver const&, Foam::Istream&) #4 Foam::lduMatrix::preconditioner::addasymMatrixCons tructorToTable<foam::dilupreco nditioner>::New(Foam::lduMatrix::solver const&, Foam::Istream&) #5 Foam::lduMatrix::preconditioner::New(Foam::lduMatr ix::solver const&, Foam::Istream&) #6 Foam::PBiCG::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const #7 Foam::fvMatrix<foam::vector<double> >::solve(Foam::Istream&) #8 Foam::lduMatrix::solverPerformance Foam::solve<foam::vector<double> >(Foam::tmp<foam::fvmatrix<foam::vector<double> > > const&) #9 main #10 __libc_start_main #11 __gxx_personality_v0 at ../sysdeps/i386/elf/start.S:122 Increasing the time step to 0.003s circumvents the problem. Solver/Application: sonicFoam Source file: Testcase: forwardStep tutorial for sonicFoam Platform: All Version: 1.4 Notes: The issue was found by Florian Fruth. See http://www.cfd-online.com/cgi-bin/Op...how.cgi?1/4657 Regards, Alberto
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Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using. |
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June 10, 2007, 15:35 |
As suggested by Hrvoje, the so
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#2 |
Senior Member
Alberto Passalacqua
Join Date: Mar 2009
Location: Ames, Iowa, United States
Posts: 1,912
Rep Power: 36 |
As suggested by Hrvoje, the solution consists in setting the outlet BC to zeroGradient for T and U.
I attach the corrected tutorial case. forwardStep.zip Regards, A.
__________________
Alberto Passalacqua GeekoCFD - A free distribution based on openSUSE 64 bit with CFD tools, including OpenFOAM. Available as in both physical and virtual formats (current status: http://albertopassalacqua.com/?p=1541) OpenQBMM - An open-source implementation of quadrature-based moment methods. To obtain more accurate answers, please specify the version of OpenFOAM you are using. |
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