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IDProjectCategoryView StatusDate SubmittedLast Update
0001310OpenFOAM[All Projects] Bugpublic2014-06-02 10:232014-06-28 21:42
ReportercraigWhite 
Assigned To 
PrioritynormalSeverityminorReproducibilityrandom
StatusnewResolutionopen 
PlatformLinuxOSUbuntuOS Version12.04
Product Version2.1.x 
Target VersionFixed in Version 
Summary0001310: Lagrangian Particle Tracking Hangs
DescriptionDSMC solver sometimes hangs during the lagrangian particle tracking. The issue is only really seen when using large numbers of particles and happens at random intervals - I have changed the seeding for the random number generator so I wouldn't expect it to hang at the same place every time. I'm not sure what function exactly causes the issue. There is no error output, the process continues to run, but the simulation cannot proceed.

Sometimes it happens soon after a write interval, and then this write interval cannot be reconstructed as there is a particle with a position that does not match any cell - it is actually quite a relatively large distance outside of the mesh when comparing the particle position to the mesh bounding box.
Steps To ReproduceLots of particles (30 million), run in parallel, include wall surfaces and freestream boundaries.
Additional InformationAlthough I using 2.1.x, I have tried adding the fixes from previous reports of what seem to be the same problem: http://www.openfoam.org/mantisbt/view.php?id=1059 [^]

My issue still remains.
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(0003143)
wyldckat (reporter)
2014-06-28 21:38
edited on: 2014-06-28 21:42

If you could provide an example case where this can be reproduced, or at least instructions on how to configure one of OpenFOAM's tutorial cases to reproduce the same issue, it would make it a lot easier/faster to diagnose this.

In addition, knowing how many cores to use and the decomposition method used for the parallel run, would also help.


- Issue History
Date Modified Username Field Change
2014-06-02 10:23 craigWhite New Issue
2014-06-28 21:38 wyldckat Note Added: 0003143
2014-06-28 21:42 wyldckat Note Edited: 0003143 View Revisions