EDIT: I have re-titled this forum topic because I think I have come across a very broad error that causes sims to fail. I will leave the below posts alone, but as you will see, this issue is broader than this first post…
By looking at a similar simulation that does not error, I was able to determine that my floating point error has to do with ‘Selecting incompressible transport model Newtonian’.
Here is the error in the Solver Log:
Reading/calculating face flux field phi
--------------------------------------------------------------------------
[[21079,1],1]: A high-performance Open MPI point-to-point messaging module
was unable to find any relevant network interfaces:
Module: OpenFabrics (openib)
Host:
Another transport will be used instead, although this may result in
lower performance.
--------------------------------------------------------------------------
[0] #0 Foam::error::printStack(Foam::Ostream&) at ??:?
[0] #1 Foam::sigFpe::sigHandler(int) at ??:?
[0] #2 in "
[0] #3 Foam::surfaceInterpolation::makeWeights() const at ??:?
[0] #4 Foam::surfaceInterpolation::weights() const at ??:?
[0] #5
[0] at ??:?
[0] #6 __libc_start_main in "
[0] #7
[0] at ??:?
[:00167] *** Process received signal ***
[:00167] Signal: Floating point exception (8)
[:00167] Signal code: (-6)
[:00167] Failing at address: 0x3e9000000a7
[:00167] [ 0] [0x7fd6ffc8bcb0]
[:00167] [ 1] [0x7fd6ffc8bc37]
[:00167] [ 2] [0x7fd6ffc8bcb0]
[:00167] [ 3] [0x7fd702bc3dff]
[:00167] [ 4] [0x7fd702bc3ff5]
[:00167] [ 5] simpleFoam() [0x41ad29]
[:00167] [ 6] [0x7fd6ffc76f45]
[:00167] [ 7] simpleFoam() [0x41c610]
[:00167] *** End of error message ***
And here is the same location in a simulation which does not error:
Reading/calculating face flux field phi
Selecting incompressible transport model Newtonian
Selecting RAS turbulence model kOmegaSST
kOmegaSSTCoeffs
{
alphaK1 0.85;
alphaK2 1;
alphaOmega1 0.5;
alphaOmega2 0.856;
gamma1 0.555555555556;
gamma2 0.44;
beta1 0.075;
beta2 0.0828;
betaStar 0.09;
a1 0.31;
b1 1;
c1 10;
F3 false;
}
I can not figure out why ‘another transport’ model is needed, as far as I know the only difference in the sims is the number of volumes in their meshes of the same geometry.
Any ideas?
Thanks,
Dale
, like me…
(I can share the project with you and point you to the error sims if you would like to take a crack at it 
If the engineers find something I will share it with you of course.