View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0003731 | OpenFOAM | Bug | public | 2021-09-19 20:03 | 2021-09-19 20:21 |
| Reporter | YingWU970709 | Assigned To | henry | ||
| Priority | urgent | Severity | crash | Reproducibility | always |
| Status | closed | Resolution | no change required | ||
| Platform | Linux | OS | Ubuntu | OS Version | 18.04 |
| Summary | 0003731: Simulation crash due to convergence problem | ||||
| Description | The simulation for FSI problem of cylinder would crash with the following report: #0 Foam::error::printStack(Foam::Ostream&) at ??:? #1 Foam::sigFpe::sigHandler(int) at ??:? #2 ? in "/lib/x86_64-linux-gnu/libc.so.6" #3 Foam::GAMGSolver::scale(Foam::Field<double>&, Foam::Field<double>&, Foam::lduMatrix const&, Foam::FieldField<Foam::Field, double> const&, Foam::UPtrList<Foam::lduInterfaceField const> const&, Foam::Field<double> const&, unsigned char) const at ??:? #4 Foam::GAMGSolver::Vcycle(Foam::PtrList<Foam::lduMatrix::smoother> const&, Foam::Field<double>&, Foam::Field<double> const&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::Field<double>&, Foam::PtrList<Foam::Field<double> >&, Foam::PtrList<Foam::Field<double> >&, unsigned char) const at ??:? #5 Foam::GAMGSolver::solve(Foam::Field<double>&, Foam::Field<double> const&, unsigned char) const at ??:? #6 Foam::fvMatrix<double>::solveSegregated(Foam::dictionary const&) at ??:? #7 Foam::fvMatrix<double>::solve(Foam::dictionary const&) in "/home/ying/OpenFOAM41/OpenFOAM-4.1/platforms/linux64GccDPInt32Opt/bin/pimpleDyMFoam" #8 ? in "/home/ying/OpenFOAM41/OpenFOAM-4.1/platforms/linux64GccDPInt32Opt/bin/pimpleDyMFoam" #9 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6" #10 ? in "/home/ying/OpenFOAM41/OpenFOAM-4.1/platforms/linux64GccDPInt32Opt/bin/pimpleDyMFoam" Floating point exception (core dumped) The CFL becomes larger until【mean: 17.9373 max: 29208.7】at the last step before crash. I try to debug by doing the following modifications: (1) change boundary conditions of two side walls from symmetry to velocity inlet, but same error happens; (2) enlarge domain and refine mesh from 20,000 to 80,000 grids, by doing this the case can run more time but the pressure and velocity field are obviously incorrect when visualizing in Paraview and the CFL is about 30, which is also unreasonable. | ||||
| Steps To Reproduce | 1. delete log.pimpleDyMFoam and postProcessing folder 2. run Allrun file by "./Allrun" | ||||
| Tags | No tags attached. | ||||
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2021-09-19 20:03 | YingWU970709 | New Issue | |
| 2021-09-19 20:03 | YingWU970709 | File Added: corase.zip | |
| 2021-09-19 20:17 | henry | Assigned To | => henry |
| 2021-09-19 20:17 | henry | Status | new => closed |
| 2021-09-19 20:17 | henry | Resolution | open => no change required |
| 2021-09-19 20:17 | henry | Note Added: 0012198 |
