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Error caused by defining a Ramp BC for a parameter

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Old   February 24, 2014, 02:14
Default Error caused by defining a Ramp BC for a parameter
  #1
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Bobi
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Dear Foamres

I have defined a ramp BC for a parameter to increase from 0 in the start to 2 in the end of simulation (0.15 sec)

Code:
Cchi
 (
    (0    0)
    (0.15  2)
 );
However, during simulation when the quantity reaches around 1.5, it diverges. this is my output:

Code:
 Courant Number mean: 0.0187511 max: 0.307637
deltaT = 2.20033e-05
Time = 0.113157

diagonal:  Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
DILUPBiCG:  Solving for Ux, Initial residual = 3.29237e-05, Final residual = 3.19744e-12, No Iterations 2
DILUPBiCG:  Solving for Uy, Initial residual = 0.0056262, Final residual = 1.44868e-12, No Iterations 3
DILUPBiCG:  Solving for Uz, Initial residual = 0.000508302, Final residual = 1.91713e-11, No Iterations 2
DILUPBiCG:  Solving for Z, Initial residual = 3.85859e-06, Final residual = 4.80055e-10, No Iterations 1
Correcting mixture fraction variance with CvarZ = 1
Correcting scalar dissipation rate with Cchi = 1.50876
#0  Foam::error::printStack(Foam::Ostream&) in "/home/babak/OpenFOAM/OpenFOAM-2.1.x/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#1  Foam::sigSegv::sigHandler(int) in "/home/babak/OpenFOAM/OpenFOAM-2.1.x/platforms/linux64GccDPOpt/lib/libOpenFOAM.so"
#2   in "/lib/x86_64-linux-gnu/libc.so.6"
#3  Foam::linearInterpolation::interpolate(Foam::List<int> const&, Foam::List<double> const&) const in "/home/babak/OpenFOAM/babak-2.1.x/platforms/linux64GccDPOpt/lib/libFlameletCombustionModels.so"
#4  Foam::combustionModels::YSLFModel<Foam::combustionModels::rhoCombustionModel, Foam::sutherlandTransport<Foam::specieThermo<Foam::janafThermo<Foam::perfectGas> > > >::correct() in "/home/babak/OpenFOAM/babak-2.1.x/platforms/linux64GccDPOpt/lib/libFlameletCombustionModels.so"
#5  
 in "/home/babak/OpenFOAM/babak-2.1.x/platforms/linux64GccDPOpt/bin/flameletFoam"
#6  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#7  
 in "/home/babak/OpenFOAM/babak-2.1.x/platforms/linux64GccDPOpt/bin/flameletFoam"
Segmentation fault
Would you PLZ hint me why this happens?

Regards
Bobi
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Old   February 24, 2014, 07:38
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Joachim Herb
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In $FOAM_TUTORIALS/multiphase/interPhaseChangeDyMFoam/propeller/0.org/U there is an example of a time depending boundary condition defined by a table.
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