problem in gas-solid fluidized bed simulation

bhanwar · October 29, 2011, 06:37

Calculating averages

Courant Number mean: 0.605965 max: 1.27644
Max Ur Courant Number = 1.81825
Time = 0.061

DILUPBiCG: Solving for alpha, Initial residual = 0.274526, Final residual = 4.87573e-11, No Iterations 65
Dispersed phase volume fraction = 0.198 Min(alpha) = -0.0348437 Max(alpha) = 0.651658
DILUPBiCG: Solving for alpha, Initial residual = 0.0455936, Final residual = 3.07973e-11, No Iterations 37
Dispersed phase volume fraction = 0.198 Min(alpha) = -0.057928 Max(alpha) = 1.07894
#0 Foam::error:

rintStack(Foam::Ostream&) in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#1 Foam::sigFpe::sigHandler(int) in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#2 Uninterpreted:
#3 Foam::GAMGSolver::scalingFactor(Foam::Field<double >&, Foam::Field<double> const&, Foam::Field<double> const&, Foam::Field<double> const&) const in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#4 Foam::GAMGSolver::scalingFactor(Foam::Field<double >&, Foam::lduMatrix const&, Foam::Field<double>&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#5 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::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#6 Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so"
#7 Foam::fvMatrix<double>::solve(Foam::dictionary const&) in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libfiniteVolume.so"
#8
in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/bin/twoPhaseEulerFoam"
#9 __libc_start_main in "/lib/tls/i686/cmov/libc.so.6"
#10
in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/bin/twoPhaseEulerFoam"

im not getting how to solve this error. can anyone suggest me what is wrong here??

alberto · October 30, 2011, 03:39

You need to explain the case setup you are using if you want an answer.

P.S. The problem is here: Max(alpha) = 1.07894

October 29, 2011, 06:37	problem in gas-solid fluidized bed simulation	#1
bhanwar New Member bhanwar singh Join Date: Jul 2011 Location: GUWAHATI Posts: 8 Rep Power: 14	Calculating averages Courant Number mean: 0.605965 max: 1.27644 Max Ur Courant Number = 1.81825 Time = 0.061 DILUPBiCG: Solving for alpha, Initial residual = 0.274526, Final residual = 4.87573e-11, No Iterations 65 Dispersed phase volume fraction = 0.198 Min(alpha) = -0.0348437 Max(alpha) = 0.651658 DILUPBiCG: Solving for alpha, Initial residual = 0.0455936, Final residual = 3.07973e-11, No Iterations 37 Dispersed phase volume fraction = 0.198 Min(alpha) = -0.057928 Max(alpha) = 1.07894 #0 Foam::error:rintStack(Foam::Ostream&) in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so" #1 Foam::sigFpe::sigHandler(int) in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so" #2 Uninterpreted: #3 Foam::GAMGSolver::scalingFactor(Foam::Field<double >&, Foam::Field<double> const&, Foam::Field<double> const&, Foam::Field<double> const&) const in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so" #4 Foam::GAMGSolver::scalingFactor(Foam::Field<double >&, Foam::lduMatrix const&, Foam::Field<double>&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so" #5 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::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so" #6 Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libOpenFOAM.so" #7 Foam::fvMatrix<double>::solve(Foam::dictionary const&) in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/lib/libfiniteVolume.so" #8 in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/bin/twoPhaseEulerFoam" #9 __libc_start_main in "/lib/tls/i686/cmov/libc.so.6" #10 in "/home/anoop/OpenFOAM/OpenFOAM-2.0.x/platforms/linuxGccDPOpt/bin/twoPhaseEulerFoam" im not getting how to solve this error. can anyone suggest me what is wrong here??

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October 30, 2011, 03:39		#2
alberto Senior Member Alberto Passalacqua Join Date: Mar 2009 Location: Ames, Iowa, United States Posts: 1,912 Rep Power: 36	You need to explain the case setup you are using if you want an answer. P.S. The problem is here: Max(alpha) = 1.07894 __________________ 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.