Arbitrary cyclic patch

luca · November 2, 2006, 05:58

Hi,

I need to manage mesh with cyclic patch. The problem is that I cannot use couplePatch utility because of are no integral cyclic patches. It's possible in OF to manage "Arbitrary" cyclic patch or do you have suggestions about it?!

Luca

mattijs · November 3, 2006, 04:51

Arbitrary cyclics do not exist. Any matching (to create cut faces) should be done as a preprocessing step. There is no ready made tool in OpenFOAM to do this. You might be able to program something like:
- create an offsetted mesh (transformPoints)
- merge the original and offsetted mesh (mergeMeshes)
- create overlapping region (stitchMesh)
- remove the offsetted region (subsetMesh)
- duplicate the cut faces from stitchMesh to the other side of the geometry (missing tool)
- create cyclics (createPatches)

hjasak · November 3, 2006, 07:45

Actually, there is work going on on this but it is not released into the public domain. There are 2 ways of doing this, one of which works on the originl mesh and another that performs face cutting using my sliding interface tools.

Hrv

luca · November 6, 2006, 04:14

Thanks a lot for your suggestions

Luca

cosimobianchini · December 20, 2006, 12:24

Hi Mattijs,
I'm trying to follow your suggestions on how to modify cyclic patches to obtain OneToOne correspondence between the faces on different patches enabling the match as cyclic patches.
Apart of the missing tool (copy the slave patch of the stitchMesh on the master one), I'm stuck on how to remove the mergedMesh from the mesh itself.
I don't understand how to define the <set> argument in the subsetMesh command line.
Thank you very much for your explanation

Cosimo

mattijs · December 21, 2006, 18:50

The argument to subsetMesh is a cellSet. cellSets can be defined using the cellSet or setSet utility.

Have a look at e.g. boxToCell in the sample cellSetDict in the cellSet source directory.

November 2, 2006, 05:58	Hi, I need to manage mesh w	#1
luca Member Luca M. Join Date: Mar 2009 Location: Luzern, Switzerland Posts: 59 Rep Power: 17	Hi, I need to manage mesh with cyclic patch. The problem is that I cannot use couplePatch utility because of are no integral cyclic patches. It's possible in OF to manage "Arbitrary" cyclic patch or do you have suggestions about it?! Luca

November 3, 2006, 04:51	Arbitrary cyclics do not exist	#2
mattijs Senior Member Mattijs Janssens Join Date: Mar 2009 Posts: 1,419 Rep Power: 26	Arbitrary cyclics do not exist. Any matching (to create cut faces) should be done as a preprocessing step. There is no ready made tool in OpenFOAM to do this. You might be able to program something like: - create an offsetted mesh (transformPoints) - merge the original and offsetted mesh (mergeMeshes) - create overlapping region (stitchMesh) - remove the offsetted region (subsetMesh) - duplicate the cut faces from stitchMesh to the other side of the geometry (missing tool) - create cyclics (createPatches)

November 3, 2006, 07:45	Actually, there is work going	#3
hjasak Senior Member Hrvoje Jasak Join Date: Mar 2009 Location: London, England Posts: 1,907 Rep Power: 33	Actually, there is work going on on this but it is not released into the public domain. There are 2 ways of doing this, one of which works on the originl mesh and another that performs face cutting using my sliding interface tools. Hrv __________________ Hrvoje Jasak Providing commercial FOAM/OpenFOAM and CFD Consulting: http://wikki.co.uk

November 6, 2006, 04:14	Thanks a lot for your suggesti	#4
luca Member Luca M. Join Date: Mar 2009 Location: Luzern, Switzerland Posts: 59 Rep Power: 17	Thanks a lot for your suggestions Luca

December 20, 2006, 12:24	Hi Mattijs, I'm trying to fol	#5
cosimobianchini Member cosimo bianchini Join Date: Mar 2009 Location: Florence, Tuscany, Italy Posts: 88 Rep Power: 17	Hi Mattijs, I'm trying to follow your suggestions on how to modify cyclic patches to obtain OneToOne correspondence between the faces on different patches enabling the match as cyclic patches. Apart of the missing tool (copy the slave patch of the stitchMesh on the master one), I'm stuck on how to remove the mergedMesh from the mesh itself. I don't understand how to define the <set> argument in the subsetMesh command line. Thank you very much for your explanation Cosimo __________________ Cosimo Bianchini Ergon Research s.r.l. Via Panciatichi, 92 50127 Florence - ITALY Tel: +39 055 0763716 Mob: +39 320 9460153 e-mail: cosimo.bianchini@ergonresearch.it URL: www.ergonresearch.it

December 21, 2006, 18:50	The argument to subsetMesh is	#6
mattijs Senior Member Mattijs Janssens Join Date: Mar 2009 Posts: 1,419 Rep Power: 26	The argument to subsetMesh is a cellSet. cellSets can be defined using the cellSet or setSet utility. Have a look at e.g. boxToCell in the sample cellSetDict in the cellSet source directory.

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