[HaraF]

Hello! I'm reaching out to the cfd community for help with a case. I'm trying to simulate the flow around the onera-m6 wing with turbulence model. However I'm getting the same error:
[1] #0 Foam::error:rintStack(Foam::Ostream&) at ??:?
[1] #1 Foam::sigFpe::sigHandler(int) at ??:?
[1] #2 ? in "/lib/x86_64-linux-gnu/libc.so.6"
[1] #3 ? in "/lib/x86_64-linux-gnu/libm.so.6"
[1] #4 Foam::hePsiThermo<Foam:siThermo::composite, Foam:ureMixture<Foam::sutherlandTransport<Foam:: species::thermo<Foam::hConstThermo<Foam:erfectGa s<Foam::specie> >, Foam::sensibleInternalEnergy> > > >::calculate() at ??:?
[1] #5 virtual thunk to Foam::hePsiThermo<Foam:siThermo::composite, Foam:ureMixture<Foam::sutherlandTransport<Foam:: species::thermo<Foam::hConstThermo<Foam:erfectGa s<Foam::specie> >, Foam::sensibleInternalEnergy> > > >::correct() at ??:?
[1] #6 Foam::solvers::fluid::thermophysicalPredictor() at ??:?
[1] #7 ? in "/opt/openfoam11/platforms/linux64GccDPInt32Opt/bin/foamRun"
[1] #8 ? in "/lib/x86_64-linux-gnu/libc.so.6"
[1] #9 __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
[1] #10 ? in "/opt/openfoam11/platforms/linux64GccDPInt32Opt/bin/foamRun"
[optiplex:712320] *** Process received signal ***
[optiplex:712320] Signal: Floating point exception (8)
[optiplex:712320] Signal code: (-6)
[optiplex:712320] Failing at address: 0x3e8000ade80
[optiplex:712320] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x75da60e42520]
[optiplex:712320] [ 1] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x12c)[0x75da60e969fc]
[optiplex:712320] [ 2] /lib/x86_64-linux-gnu/libc.so.6(raise+0x16)[0x75da60e42476]
[optiplex:712320] [ 3] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x75da60e42520]
[optiplex:712320] [ 4] /lib/x86_64-linux-gnu/libm.so.6(+0x1349c)[0x75da6212c49c]
[optiplex:712320] [ 5] /opt/openfoam11/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThe rmoINS_9psiThermo9compositeENS_11pureMixtureINS_19 sutherlandTransportINS_7species6thermoINS_12hConst ThermoINS_10perfectGasINS_6specieEEEEENS_22sensibl eInternalEnergyEEEEEEEE9calculateEv+0xe3d)[0x75da56836c3d]
[optiplex:712320] [ 6] /opt/openfoam11/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZTv0_n72_N4Foam11 hePsiThermoINS_9psiThermo9compositeENS_11pureMixtu reINS_19sutherlandTransportINS_7species6thermoINS_ 12hConstThermoINS_10perfectGasINS_6specieEEEEENS_2 2sensibleInternalEnergyEEEEEEEE7correctEv+0x35)[0x75da5683aa85]
[optiplex:712320] [ 7] /opt/openfoam11/platforms/linux64GccDPInt32Opt/lib/libfluid.so(_ZN4Foam7solvers5fluid23thermophysical PredictorEv+0x546)[0x75da5e03c686]
[optiplex:712320] [ 8] foamRun(+0x3fb8)[0x60162db52fb8]
[optiplex:712320] [ 9] /lib/x86_64-linux-gnu/libc.so.6(+0x29d90)[0x75da60e29d90]
[optiplex:712320] [10] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80)[0x75da60e29e40]
[optiplex:712320] [11] foamRun(+0x4765)[0x60162db53765]
[optiplex:712320] *** End of error message ***
--------------------------------------------------------------------------
Primary job terminated normally, but 1 process returned
a non-zero exit code. Per user-direction, the job has been aborted.
--------------------------------------------------------------------------
--------------------------------------------------------------------------
mpirun noticed that process rank 1 with PID 0 on node optiplex exited on signal 8 (Floating point exception).

Chat gpt suggested that i add the following lines to m controlDict:

equationOfState
{
rho rho;
}
specie
{
T 300;
Cp 1004.5;
}

Does anybody have an idea on how to fix the error and reach the wanted convergence?

Thank you in advance guys!

[rocketLauncher]

Hi,

Openfoam sometimes gives floating point exceptions when the mesh quality is not good enough. Have you run checkMesh?

If the mesh is okay, I suggest you have a look at this: https://baramcfd.org/tutorials/2024/03/21/onera-post/

Baram flow is a really nice interface for OF. You can translate the page to English to check your settings with their tutorial. I hope this helps