Floating Point exception (core dumped) chtMultiRegionFoam
1 Attachment(s)
I am just trying to simulate the compressible flow of air within two hotplates maintained at a temperature of 1800 K. It is a 2D Simulation. I want to understand how heat transfer affects the Velocity and temperature of Air flowing within the Hot Plates. There are 2 Solid regions and 1 Fluid region. I am getting a floating-point error in the beginning itself.
To resolve the issue, i tried many cases like,
1.) I tried to run a dummy case, in order to understand if the solver is running.
PIMPLE
{
}
PIMPLE algorithm finds no convergences defined for all regions and It shifts to PISO. This is agreeable. And finally a Floating Point error. I updated the convergence criteria as well.
2.)nI rechecked my boundary conditions. For P, it is Calculated and T Zero Gradient. I kept my maxCo as 0.5.
I do understand this error is because of division by 0 but not able to point out the problem.
Can anyone help me understand what can be the issue? I am very new to OpenFoam and CFD and I am stuck at this point and not able to resolve this issue.
My Log File
Code:
/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration | Website: https://openfoam.org
\\ / A nd | Version: 7
\\/ M anipulation |
\*---------------------------------------------------------------------------*/
Build : 7-1ff648926f77
Exec : chtMultiRegionFoam
Date : May 28 2020
Time : 17:40:26
Host : "test-VBox"
PID : 1699
I/O : uncollated
Case : /home/test/OpenFOAM/hotpipe2D
nProcs : 1
sigFpe : Enabling floating point exception trapping (FOAM_SIGFPE).
fileModificationChecking : Monitoring run-time modified files using timeStampMaster (fileModificationSkew 10)
allowSystemOperations : Allowing user-supplied system call operations
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Create time
Create fluid mesh for region Air for time = 0
Create solid mesh for region solid1 for time = 0
Create solid mesh for region solid2 for time = 0
*** Reading fluid mesh thermophysical properties for region Air
Adding to thermoFluid
Selecting thermodynamics package
{
type heRhoThermo;
mixture pureMixture;
transport const;
thermo hConst;
equationOfState perfectGas;
specie specie;
energy sensibleEnthalpy;
}
Adding to rhoFluid
Adding to UFluid
Adding to phiFluid
Adding to gFluid
Adding to hRefFluid
Adding to ghFluid
Adding to ghfFluid
Adding to turbulenceFluid
Selecting turbulence model type laminar
Selecting laminar stress model Stokes
Adding to reactionFluid
Combustion model not active: combustionProperties not found
Selecting combustion model none
Adding to radiationFluid
Radiation model not active: radiationProperties not found
Selecting radiationModel none
Adding to KFluid
Adding to dpdtFluid
Adding to fieldsFluid
Adding MRF
No MRF models present
Adding fvOptions
*** Reading solid mesh thermophysical properties for region solid1
Adding to thermos
Selecting thermodynamics package
{
type heSolidThermo;
mixture pureMixture;
transport constIso;
thermo hConst;
equationOfState rhoConst;
specie specie;
energy sensibleEnthalpy;
}
Adding to radiations
Radiation model not active: radiationProperties not found
Selecting radiationModel none
Adding fvOptions
*** Reading solid mesh thermophysical properties for region solid2
Adding to thermos
Selecting thermodynamics package
{
type heSolidThermo;
mixture pureMixture;
transport constIso;
thermo hConst;
equationOfState rhoConst;
specie specie;
energy sensibleEnthalpy;
}
Adding to radiations
Radiation model not active: radiationProperties not found
Selecting radiationModel none
Adding fvOptions
PIMPLE: Region Air
PIMPLE: Convergence criteria found
p: tolerance 1e-05
U: tolerance 1e-05
T: tolerance 1e-05
PIMPLE: Region solid1
PIMPLE: Convergence criteria found
T: tolerance 1e-05
PIMPLE: Region solid2
PIMPLE: Convergence criteria found
T: tolerance 1e-05
PIMPLE: Operating solver in transient mode with 1 outer corrector
PIMPLE: Operating solver in PISO mode
#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::divide(Foam::Field<double>&, Foam::UList<double> const&, Foam::UList<double> const&) at ??:?
#4 Foam::operator/(Foam::UList<double> const&, Foam::UList<double> const&) at ??:?
#5 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
#6 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
#7 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#8 ? in "/opt/openfoam7/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionFoam"
Floating point exception (core dumped)
My case File is attached for reference. |
