| Sunxing |
May 11, 2013 10:20 |
unknown problems of a cascade case
2 Attachment(s)
Hi foamers,
I have set up a cascade case with a total pressure at inlet, and static pressure at outlet. However it crushes after about 500 iterations, and I can't find out the problem. Here is the error notes on the terminal:
PHP Code:
Courant Number mean: 0.000816769 max: 0.207725
Time = 5.17e-05
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for Ux, Initial residual = 0.00258029, Final residual = 2.47124e-09, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.00267984, Final residual = 2.28166e-09, No Iterations 1
DILUPBiCG: Solving for h, Initial residual = 0.00253004, Final residual = 2.94904e-09, No Iterations 1
DICPCG: Solving for p, Initial residual = 0.007625, Final residual = 1.02296e-07, No Iterations 1
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 1.94796e-08, global = 1.42837e-08, cumulative = 1.43109e-06
rho max/min : 2 0.5
DICPCG: Solving for p, Initial residual = 1.30124e-05, Final residual = 2.85334e-10, No Iterations 1
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
time step continuity errors : sum local = 1.42649e-08, global = 1.42503e-08, cumulative = 1.44534e-06
rho max/min : 2 0.5
DILUPBiCG: Solving for omega, Initial residual = 0.00012879, Final residual = 3.52752e-09, No Iterations 1
DILUPBiCG: Solving for k, Initial residual = 0.000171787, Final residual = 3.93006e-09, No Iterations 1
bounding k, min: -6.78537 max: 46058.1 average: 334.576
ExecutionTime = 983.52 s ClockTime = 984 s
Courant Number mean: 0.000816995 max: 0.207921
Time = 5.18e-05
diagonal: Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG: Solving for Ux, Initial residual = 0.00257906, Final residual = 2.03599e-09, No Iterations 1
DILUPBiCG: Solving for Uy, Initial residual = 0.00267935, Final residual = 2.25978e-09, No Iterations 1
DILUPBiCG: Solving for h, Initial residual = 0.00251794, Final residual = 2.75875e-09, No Iterations 1
#0 Foam::error::printStack(Foam::Ostream&) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#1 Foam::sigFpe::sigHandler(int) in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#2 in "/lib/x86_64-linux-gnu/libc.so.6"
#3 Foam::hPsiThermo<Foam::pureMixture<Foam::sutherlandTransport<Foam::specieThermo<Foam::hConstThermo<Foam::perfectGas> > > > >::calculate() in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so"
#4 Foam::hPsiThermo<Foam::pureMixture<Foam::sutherlandTransport<Foam::specieThermo<Foam::hConstThermo<Foam::perfectGas> > > > >::correct() in "/opt/openfoam211/platforms/linux64GccDPOpt/lib/libbasicThermophysicalModels.so"
#5
in "/opt/openfoam211/platforms/linux64GccDPOpt/bin/rhoPimpleFoam"
#6 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#7
in "/opt/openfoam211/platforms/linux64GccDPOpt/bin/rhoPimpleFoam"
floating point exception
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