|
|
|
|
|
The location reported by the error message is outside the domain, above the inlet patch. Patch injection chooses locations randomly, which can result in the particles overlapping. Overlap results in huge forces and velocities, which might break the tracking. It's therefore generally not a good idea to do patch injection of pair-colliding particles. I can't reproduce this error, but seeing as how it might be a function of random number generation, this isn't surprising. |
|
|
Hi Will!! Thank you for monitoring this bug. However, I still don't understand the fix. I changed my particle injection to 'manual' using the kinematiccloudpositions file (no randomness in the particle positions) and I still continue to get the same error. What parameters did you use when setting up the 'tar-ball' of the case uploaded with this issue? I wanted to know how how you have overcome this error. Is there something wrong with my set-up now (could you share your tar-ball case set up)?? During run time i get this warning msg as well - --> FOAM Warning : From function void Foam::InteractionLists<ParticleType>::sendReferredData(const List<DynamicList<ParticleType*> >& cellOccupancy,PstreamBuffers& pBufs) in file /home/ask/OpenFOAM/OpenFOAM-2.3.0/src/lagrangian/basic/lnInclude/InteractionLists.C at line 1175 Mesh changing, rebuilding InteractionLists form scratch. Building InteractionLists with interaction distance 0.0025 Building referred interaction lists Building direct interaction lists Is this normal?? Or is it here that the source of this error lies?? BR ansubru |
|
|
|
|
|
overlap_velocity.png (64,286 bytes) |
|
|
Apologies, I wasn't running the dynamic mesh part. I can, in fact, reproduce the error. That warning message is to be expected for a dynamic mesh case. I have looked some more at your case, and I still think the problem is overlap at the point of injection. The overlap is generating large velocities at the start. The youngs modulus is also very low, so the calculated wall force is insufficient to keep the particles in the domain. An actual particle, with that youngs modulus, and at that speed, would splat, not rebound. I've attached my case, which uses a manual injection without any overlap. The difference between the particle velocities in the two cases is shown in the uploaded image. The particles don't escape in my setup. |
|
|
Resolved by commits: commit 3891c6ada0248435ad62a30f30e7d0be9df8abd5 commit 7200eb272ab8dd0d754552edfa0753d4c5a15983 See also the discussion in thread http://www.openfoam.org/mantisbt/view.php?id=1461 |
- Anonymous
