[songyi719]

Hi, I am running rhoCentralFoam for supersonic case, and experiencing same problem about rhoE constantly.

While running solver, it crashes immediately, or after few seconds. I have tried several different ways to stabilize it (e.g. lower dt, Co) but it didn't work well

When problems occur in same value everytime, it means there must be some problem to it, but I cannot find out why.

What would be the problem??

Below is the error log

What could be the solution??

deltaT = 4.99366e-07
Mean and max Courant Numbers = 0.00269791 0.298293
Time = 4.25729e-05s

diagonal:  Solving for rho, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal:  Solving for rhoUx, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal:  Solving for rhoUy, Initial residual = 0, Final residual = 0, No Iterations 0
diagonal:  Solving for rhoUz, Initial residual = 0, Final residual = 0, No Iterations 0
smoothSolver:  Solving for Ux, Initial residual = 5.91172e-09, Final residual = 5.91172e-09, No Iterations 0
smoothSolver:  Solving for Uy, Initial residual = 2.04788e-07, Final residual = 3.87036e-17, No Iterations 2
smoothSolver:  Solving for Uz, Initial residual = 1.52285e-07, Final residual = 2.86906e-17, No Iterations 2
diagonal:  Solving for rhoE, Initial residual = 0, Final residual = 0, No Iterations 0
[38] #0  Foam::error::printStack(Foam::Ostream&) at ??:?
[38] #1  Foam::sigFpe::sigHandler(int) at ??:?
[38] #2  ? in "/lib/x86_64-linux-gnu/libc.so.6"
[38] #3  ? in "/lib/x86_64-linux-gnu/libm.so.6"
[38] #4  Foam::hePsiThermo<Foam::psiThermo::composite, Foam::pureMixture<Foam::sutherlandTransport<Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleInternalEnergy> > > >::calculate() at ??:?
[38] #5  virtual thunk to Foam::hePsiThermo<Foam::psiThermo::composite, Foam::pureMixture<Foam::sutherlandTransport<Foam::species::thermo<Foam::hConstThermo<Foam::perfectGas<Foam::specie> >, Foam::sensibleInternalEnergy> > > >::correct() at ??:?
[38] #6  ? in "/opt/openfoam10/platforms/linux64GccDPInt32Opt/bin/rhoCentralFoam"
[38] #7  ? in "/lib/x86_64-linux-gnu/libc.so.6"
[38] #8  __libc_start_main in "/lib/x86_64-linux-gnu/libc.so.6"
[38] #9  ? in "/opt/openfoam10/platforms/linux64GccDPInt32Opt/bin/rhoCentralFoam"
[songyi719sim:434738] *** Process received signal ***
[songyi719sim:434738] Signal: Floating point exception (8)
[songyi719sim:434738] Signal code:  (-6)
[songyi719sim:434738] Failing at address: 0x3e80006a232
[songyi719sim:434738] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f1f63abd520]
[songyi719sim:434738] [ 1] /lib/x86_64-linux-gnu/libc.so.6(pthread_kill+0x12c)[0x7f1f63b11a7c]
[songyi719sim:434738] [ 2] /lib/x86_64-linux-gnu/libc.so.6(raise+0x16)[0x7f1f63abd476]
[songyi719sim:434738] [ 3] /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f1f63abd520]
[songyi719sim:434738] [ 4] /lib/x86_64-linux-gnu/libm.so.6(+0x1349c)[0x7f1f63cd649c]
[songyi719sim:434738] [ 5] /opt/openfoam10/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermo9compositeENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE9calculateEv+0xe17)[0x7f1f659ba257]
[songyi719sim:434738] [ 6] /opt/openfoam10/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZTv0_n64_N4Foam11hePsiThermoINS_9psiThermo9compositeENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE7correctEv+0x35)[0x7f1f659d6255]
[songyi719sim:434738] [ 7] rhoCentralFoam(+0x3822d)[0x555b8ecc322d]
[songyi719sim:434738] [ 8] /lib/x86_64-linux-gnu/libc.so.6(+0x29d90)[0x7f1f63aa4d90]
[songyi719sim:434738] [ 9] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0x80)[0x7f1f63aa4e40]
[songyi719sim:434738] [10] rhoCentralFoam(+0x3a9d5)[0x555b8ecc59d5]
[songyi719sim:434738] *** 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 38 with PID 0 on node songyi719sim exited on signal 8 (Floating point exception).
--------------------------------------------------------------------------

[songyi719]

Problem solved!
I reduced maxCo and timestep