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#1 |
Senior Member
alberto
Join Date: Apr 2016
Location: Mexico
Posts: 119
Rep Power: 10 ![]() |
Hello., im trying to simulate a pipe with porous media and heat transfer using buoyant simplefoam with fvoptions porousmedia.
Do you know why the simulation stop? I dont understand what means that error. thank u for your time Time = 26 DILUPBiCG: Solving for Ux, Initial residual = 0.0623969, Final residual = 0.000334212, No Iterations 1 DILUPBiCG: Solving for Uy, Initial residual = 0.101444, Final residual = 0.000653273, No Iterations 1 DILUPBiCG: Solving for Uz, Initial residual = 0.149451, Final residual = 0.000506783, No Iterations 1 DILUPBiCG: Solving for h, Initial residual = 0.00689413, Final residual = 1.16579e-05, No Iterations 2 GAMG: Solving for p_rgh, Initial residual = 0.14369, Final residual = 0.00132583, No Iterations 4 time step continuity errors : sum local = 0.0131216, global = 0.00379873, cumulative = 0.00339527 rho max/min : 2.66735 0.225983 ExecutionTime = 336.84 s ClockTime = 389 s Time = 27 DILUPBiCG: Solving for Ux, Initial residual = 0.0921637, Final residual = 0.000623586, No Iterations 1 DILUPBiCG: Solving for Uy, Initial residual = 0.12727, Final residual = 0.00119562, No Iterations 1 DILUPBiCG: Solving for Uz, Initial residual = 0.277155, Final residual = 0.00148346, No Iterations 1 DILUPBiCG: Solving for h, Initial residual = 0.00678693, Final residual = 6.33452e-06, No Iterations 2 [0] #0 Foam::error: ![]() [0] #1 Foam::sigFpe::sigHandler(int) at ??:? [0] #2 ? in "/lib/x86_64-linux-gnu/libc.so.6" [0] #3 Foam::GAMGSolver::scale(Foam::Field<double>&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const at ??:? [0] #4 Foam::GAMGSolver::Vcycle(Foam::PtrList<Foam::lduMa trix::smoother> const&, Foam::Field<double>&, Foam::Field<double> const&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const at ??:? [0] #5 Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:? [0] #6 Foam::fvMatrix<double>::solveSegregated(Foam::dict ionary const&) at ??:? [0] #7 Foam::fvMatrix<double>::solve(Foam::dictionary const&) at ??:? [0] #8 Foam::fvMatrix<double>::solve() at ??:? [0] #9 ? at ??:? [0] #10 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" [0] #11 ? at ??:? [Guacamaya:09486] *** Process received signal *** [Guacamaya:09486] Signal: Floating point exception (8) [Guacamaya:09486] Signal code: (-6) [Guacamaya:09486] Failing at address: 0x3e80000250e [Guacamaya:09486] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x354b0)[0x7f0ff0dce4b0] [Guacamaya:09486] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38)[0x7f0ff0dce428] [Guacamaya:09486] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x354b0)[0x7f0ff0dce4b0] [Guacamaya:09486] [ 3] /opt/openfoam4/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver5scaleERNS_5Fi eldIdEES3_RKNS_9lduMatrixERKNS_10FieldFieldIS1_dEE RKNS_8UPtrListIKNS_17lduInterfaceFieldEEERKS2_h+0x ce)[0x7f0ff2039b4e] [Guacamaya:09486] [ 4] /opt/openfoam4/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver6VcycleERKNS_7 PtrListINS_9lduMatrix8smootherEEERNS_5FieldIdEERKS 8_S9_S9_S9_S9_S9_RNS1_IS8_EESD_h+0x7b2)[0x7f0ff203ddb2] [Guacamaya:09486] [ 5] /opt/openfoam4/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so(_ZNK4Foam10GAMGSolver5solveERNS_5Fi eldIdEERKS2_h+0x86d)[0x7f0ff204070d] [Guacamaya:09486] [ 6] /opt/openfoam4/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so(_ZN4Foam8fvMatrixIdE15solveSegr egatedERKNS_10dictionaryE+0x15b)[0x7f0ff5a5f95b] [Guacamaya:09486] [ 7] buoyantSimpleFoam(_ZN4Foam8fvMatrixIdE5solveERKNS_ 10dictionaryE+0x191)[0x493971] [Guacamaya:09486] [ 8] buoyantSimpleFoam(_ZN4Foam8fvMatrixIdE5solveEv+0x1 35)[0x493c25] [Guacamaya:09486] [ 9] buoyantSimpleFoam[0x4306bc] [Guacamaya:09486] [10] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x7f0ff0db9830] [Guacamaya:09486] [11] buoyantSimpleFoam[0x433539] [Guacamaya:09486] *** End of error message *** -------------------------------------------------------------------------- mpirun noticed that process rank 0 with PID 9486 on node Guacamaya exited on signal 8 (Floating point exception). -------------------------------------------------------------------------- |
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#2 |
Senior Member
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Hi,
You simulation diverges. Reason? Could be lots of. You can start by going from GAMG to PCG (btw what is your settings for GAMG?). Then post your IC/BC, maybe there is a problem. |
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