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Newbie Pre-Processing problem with pimpleFoam: Courant Number mean: 3.33586e+29

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Old   May 10, 2015, 11:26
Default Newbie Pre-Processing problem with pimpleFoam: Courant Number mean: 3.33586e+29
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Hey, im extremly new to OpenFoam and can't find the solution to this problem:

Quote:
smoothSolver: Solving for Ux, Initial residual = 0.727714, Final residual = 1.21139e+10, No Iterations 1000
smoothSolver: Solving for Uy, Initial residual = 0.718046, Final residual = 2.02406e+10, No Iterations 1000
GAMG: Solving for p, Initial residual = 1, Final residual = 0.00666669, No Iterations 6
time step continuity errors : sum local = 8.47815e+25, global = -6.20357e+24, cumulative = -6.20357e+24
GAMG: Solving for p, Initial residual = 6.802e-14, Final residual = 6.802e-14, No Iterations 0
time step continuity errors : sum local = 1.84455e+28, global = 5.6604e+26, cumulative = 5.59837e+26
ExecutionTime = 15.79 s ClockTime = 16 s

Courant Number mean: 3.33586e+29 max: 5.78185e+30
Time = 0.0017

#0 Foam::error:rintStack(Foam::Ostream&) at ??:?
#1 Foam::sigFpe::sigHandler(int) at ??:?
#2 in "/lib/x86_64-linux-gnu/libc.so.6"
#3 Foam::symGaussSeidelSmoother::smooth(Foam::word const&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::Field<double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, unsigned char, int) at ??:?
#4 Foam::symGaussSeidelSmoother::smooth(Foam::Field<d ouble>&, Foam::Field<double> const&, unsigned char, int) const at ??:?
#5 Foam::smoothSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:?
#6
at ??:?
#7
at ??:?
#8
at ??:?
#9
at ??:?
#10 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#11
at ??:?
Some Infos:

I am using version 2.31, and i am trying to simulate a turbulent flow created by a cylinder hitting a naca0012-airfoil with pimpleFoam and the classical k-epsilon-modell.

i tried different k's, epsilons, p's and U's etc. and i also changed smoother-tolerances and switched turbulence on and off.
Attached Files
File Type: c epsilon.c (1.4 KB, 0 views)
File Type: c k.c (1.5 KB, 0 views)
File Type: c U.c (1.5 KB, 3 views)
File Type: c p.c (1.3 KB, 0 views)
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Old   May 10, 2015, 11:28
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and maybe these files could be also helpful? :-D
Attached Files
File Type: c blockMeshDict.c (25.4 KB, 1 views)
File Type: c boundary.c (1.7 KB, 1 views)
File Type: c controlDict.c (1.2 KB, 1 views)
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