Floating point exception (resolved. problem in mesh quality)

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Floating point exception (resolved. problem in mesh quality)

Posted March 10, 2017 at 04:54 by kindle
Updated June 7, 2017 at 12:18 by kindle

Try to get this tracking process of problem

Quote:

Originally Posted by cristian.arbe

Hello all,

I am relatively new to OpenFoam and I am trying to simulate a photoreactor on incompressible turbulent flow at steady-state. I copied most of the code of the pitzDaily model from the tutorials adjusting all the parametres for my case. When running the case in parallel I get the following error:

Code:

mpirun noticed that process rank 7 with PID 3333 on node XXXXX exited on signal 8 (Floating point exception).

Commands I used:

Code:

decomposePar
mpirun -n 16 renumberMesh -overwrite -parallel
mpirun -np 16 simpleFoam -parallel
reconstructPar -latestTime

Things I did:

deltaT: I tried reducing the deltaT to a point of a Courant number of 0.5 and still getting the error.
Lack of memory: running on a workstation of 64GB of RAM and the used RAM does not even go above 1.5 GB.
Laminar flow: simulation succeeds on calculating the laminar case.

I believe there is some bad boundary condition but I cannot find where it is.

Here is a 7z file with the case: https://mega.nz/#!Z1JTjZoY!YSOBNCHdW..._ArkRD3O1SmzvU

Posted in mesh & dynamic mesh

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