[avd28]

Hi all,


I'm having some unexpected problems with restarting my OpenFOAM/4.1 simulation from a time that is non-zero. Note that this simulation starts and runs very well when it is started from its initial conditions and does not experience stability issues.


However, for any non-zero initial time it fails instantly with the following message

#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::sqrt(Foam::Field<double>&, Foam::UList<double> const&) at ??:?
#4  Foam::tmp<Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> > Foam::sqrt<Foam::fvPatchField, Foam::volMesh>(Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) at ??:?
#5  Foam::LESModels::dynamicKEqn<Foam::IncompressibleTurbulenceModel<Foam::transportModel> >::Ck(Foam::GeometricField<Foam::SymmTensor<double>, Foam::fvPatchField, Foam::volMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) const at ??:?
#6  Foam::LESModels::dynamicKEqn<Foam::IncompressibleTurbulenceModel<Foam::transportModel> >::correctNut(Foam::GeometricField<Foam::SymmTensor<double>, Foam::fvPatchField, Foam::volMesh> const&, Foam::GeometricField<double, Foam::fvPatchField, Foam::volMesh> const&) at ??:?
#7  Foam::LESModels::dynamicKEqn<Foam::IncompressibleTurbulenceModel<Foam::transportModel> >::correctNut() at ??:?
#8  ? at ??:?
#9  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
#10  ? at ??:?
Floating point exception (core dumped)

I have set the startFrom option in controlDict case to latestTime. Also the restart timestep was not written out in compressed form. Additionally I have tried renaming the folder to '0' and starting from there. However the solution fails identically.


Any help in this matter would be greatly appreciated.

[Robin.Kamenicky]

Hi avd28,

are you sure, that the lastestTime folder is written well? Have not you stopped the simulation unexpectedly during writing? You might try to run the simulation from the one before the latest one.

Cheers Robin

[mukul92]

Hello avd28, did you ever solve this issue? I am having the same issue with restarting my LES run.



I think it has to do with the square root of a negative value while calculating Ck.