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October 19, 2021, 08:34 |
openfoam eror
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#1 |
Member
hari charan
Join Date: Sep 2021
Location: India,hyderabad
Posts: 96
Rep Power: 4 |
i am solving air and water mixture using interFoam solver using compressible interfom test case(depth charge 2D).
I didn't understand the error I got. can anyone help me regarding this error. I am attaching the files below. Create time Create mesh for time = 0 PIMPLE: No convergence criteria found PIMPLE: No corrector convergence criteria found Calculations will do 2 corrections PIMPLE: Operating solver in transient mode with 2 outer correctors Reading field p_rgh Reading field U Reading/calculating face flux field phi Reading transportProperties Selecting incompressible transport model Newtonian Selecting incompressible transport model Newtonian Selecting turbulence model type laminar Selecting laminar stress model Stokes Reading g Reading hRef Calculating field g.h No MRF models present No finite volume options present GAMGPCG: Solving for pcorr, Initial residual = 1, Final residual = 5.7547193e-06, No Iterations 19 time step continuity errors : sum local = 0.003950958, global = -1.7391304e-06, cumulative = -1.7391304e-06 Courant Number mean: 0.0040870852 max: 0.063914988 Starting time loop Courant Number mean: 0.0040870852 max: 0.063914988 Interface Courant Number mean: 0 max: 0 deltaT = 0.00011904762 Time = 0.000119047619 PIMPLE: Iteration 1 MULES: Solving for alpha.water Phase-1 volume fraction = 0.86956625 Min(alpha.water) = 0 Max(alpha.water) = 1.0504699 MULES: Solving for alpha.water Phase-1 volume fraction = 0.86956729 Min(alpha.water) = 0 Max(alpha.water) = 1.099891 GAMG: Solving for p_rgh, Initial residual = 1, Final residual = 3.2933494e+38, No Iterations 1000 time step continuity errors : sum local = 7.7972453e+35, global = 1.0611186e+22, cumulative = 1.0611186e+22 GAMGPCG: Solving for p_rgh, Initial residual = 1.0405737e-10, Final residual = 1.0405737e-10, No Iterations 0 time step continuity errors : sum local = 7.9042869e+35, global = 1.0434781e+22, cumulative = 2.1045967e+22 PIMPLE: Iteration 2 MULES: Solving for alpha.water Phase-1 volume fraction = -5.3073264e+21 Min(alpha.water) = -9.3851186e+35 Max(alpha.water) = 9.447862e+35 MULES: Solving for alpha.water Phase-1 volume fraction = -3.6251029e+36 Min(alpha.water) = -8.6122374e+56 Max(alpha.water) = 5.1339295e+56 #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:ICPreconditioner::calcReciprocalD(Foam::Fie ld<double>&, Foam::lduMatrix const&) at ??:? #4 Foam:ICSmoother:ICSmoother(Foam::word const&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&) at ??:? #5 Foam::lduMatrix::smoother::addsymMatrixConstructor ToTable<Foam:ICSmoother>::New(Foam::word const&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&) at ??:? #6 Foam::lduMatrix::smoother::New(Foam::word const&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::dictionary const&) at ??:? #7 Foam::GAMGSolver::initVcycle(Foam::PtrList<Foam::F ield<double> >&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::lduMatrix::smoother>&, Foam::Field<double>&, Foam::Field<double>&) const at ??:? #8 Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:? #9 Foam::fvMatrix<double>::solveSegregated(Foam::dict ionary const&) at ??:? #10 Foam::fvMatrix<double>::solve(Foam::dictionary const&) in "/opt/openfoam8/platforms/linux64GccDPInt32Opt/bin/interFoam" #11 Foam::fvMatrix<double>::solve() in "/opt/openfoam8/platforms/linux64GccDPInt32Opt/bin/interFoam" #12 ? in "/opt/openfoam8/platforms/linux64GccDPInt32Opt/bin/interFoam" #13 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #14 ? in "/opt/openfoam8/platforms/linux64GccDPInt32Opt/bin/interFoam" Floating point exception (core dumped) |
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October 19, 2021, 13:46 |
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#2 |
Senior Member
Lucky
Join Date: Apr 2011
Location: Orlando, FL USA
Posts: 5,654
Rep Power: 65 |
The solver was more-or-less setup successfully and it tried to do its first iteration. It eventually hit a floating point error but the residuals are not looking so good so it probably just diverged.
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October 20, 2021, 01:44 |
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#3 |
Member
hari charan
Join Date: Sep 2021
Location: India,hyderabad
Posts: 96
Rep Power: 4 |
Can you please tell me what should I do to get solution converge.
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