[Vishal Garg]

Hi Bruno,
i am Facing the problem while solving double pipe heat exchange with chtMultiRegionSimpleFoam.
My simulation is running well for 100m length pipe. but as i increase the length, i am getting error.
I am changing dimensions in blockmesh and toposetdict and arrange the mesh size according to that and all other things are same.

#0 Foam::error:rintStack(Foam::Ostream&) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so
#1 Foam::sigFpe::sigHandler(int) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libOpenFOAM.so
#2 ? in /lib/x86_64-linux-gnu/libc.so.6
#3 Foam::basicFvGeometryScheme::deltaCoeffs() const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so
#4 Foam::surfaceInterpolation::deltaCoeffs() const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so
#5 Foam::fvPatch::deltaCoeffs() const in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfiniteVolume.so
#6 ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so
#7 ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so
#8 ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so
#9 ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so
#10 ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so
#11 Foam::rhoThermo::addfvMeshConstructorToTable<Foam: :heRhoThermo<Foam::rhoThermo, Foam:ureMixture<Foam::constTransport<Foam::speci es::thermo<Foam::hConstThermo<Foam::rhoConst<Foam: :specie> >, Foam::sensibleEnthalpy> > > > >::New(Foam::fvMesh const&, Foam::word const&) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so
#12 ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so
#13 Foam::rhoThermo::New(Foam::fvMesh const&, Foam::word const&) in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so
#14 ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionSimpleFoam
#15 ? in /lib/x86_64-linux-gnu/libc.so.6
#16 __libc_start_main in /lib/x86_64-linux-gnu/libc.so.6
#17 ? in /usr/lib/openfoam/openfoam2212/platforms/linux64GccDPInt32Opt/bin/chtMultiRegionSimpleFoam
Floating point exception (core dumped)



please tell me why i am getting error.

[Vishal Garg]

please reply on my query.