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[snappyHexMesh] SnappyHexMesh featureEdgeMesh |
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July 16, 2008, 09:00 |
SnappyHexMesh featureEdgeMesh
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#1 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
Hi,
I am testing the new meshing tool. Does anyone have an idea how to create the needed 'features'? I could not find any tool to write this featureEdgeMesh. Thanks! Fabian |
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July 16, 2008, 10:17 |
Fabian,
what do you need "f
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#2 |
Senior Member
BastiL
Join Date: Mar 2009
Posts: 530
Rep Power: 20 |
Fabian,
what do you need "features" for? The process runs without. Afaik this is only for feature line prevention which is not yet implemented. Do you know about requirements of the stl import surface? Does is have to be closed an manifold? Regards |
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July 16, 2008, 10:53 |
The attache picture is actuall
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#3 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
The attache picture is actually a rectangular cubic room with a round inlet. As one can see, there is a need of 'features' in some way.
Maybe, I missed some other setting (resolveFeatureAngle is set to 30)!? According the stl surface; I have no idea. Fabian |
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July 16, 2008, 11:39 |
As said before AFAIK feature l
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#4 |
Senior Member
BastiL
Join Date: Mar 2009
Posts: 530
Rep Power: 20 |
As said before AFAIK feature lines are not yet implemented. Maybe the file "someLine.eMesh"; // file containing edge mesh" corresponds to this not yet implemented feature. So if the mesh has the maximum allowed refinemient (minium possible cell size) which it seems to have looking at the picture I guess there is nothing more you can do at the moment....
Reguards |
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July 16, 2008, 17:16 |
The mesher does not do feature
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#5 |
Senior Member
Mattijs Janssens
Join Date: Mar 2009
Posts: 1,419
Rep Power: 26 |
The mesher does not do feature lines - neither geometric features nor topological features (e.g. patch boundaries).
The someline.eMesh is a file containing points and edges where you want additional refinement. See featureEdgeMesh class in edgeMesh library. |
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July 17, 2008, 01:54 |
So it is more a kind of wrappi
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#6 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
So it is more a kind of wrapping approach!?
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July 17, 2008, 02:24 |
I think Andrew said in his tal
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#7 |
Senior Member
Mark Olesen
Join Date: Mar 2009
Location: https://olesenm.github.io/
Posts: 1,686
Rep Power: 40 |
I think Andrew said in his talk that the edges between different patch regions will be preserved.
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July 17, 2008, 08:33 |
One of my colleagues is workin
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#8 |
Senior Member
Eugene de Villiers
Join Date: Mar 2009
Posts: 725
Rep Power: 21 |
One of my colleagues is working on geometric feature line capturing at the moment and our current status was presented in Milan. As Mattijs mentioned, this functionality is not present in the 1.5 version of snappyHexMesh.
You can use any kind of triangulated surface. It doesn't have to be cleaned or closed or manifold, although you will mesh both sides if it isn't closed and the holes are large or large in number. |
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July 17, 2008, 14:21 |
O.k., I was a bit late and mis
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#9 |
Senior Member
Fabian Braennstroem
Join Date: Mar 2009
Posts: 407
Rep Power: 19 |
O.k., I was a bit late and missed the presentation.
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August 26, 2008, 00:09 |
Hi,
Any idea when feature
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#10 |
Member
Andrew King
Join Date: Mar 2009
Location: Perth, Western Australia, Australia
Posts: 82
Rep Power: 17 |
Hi,
Any idea when feature line capturing will be available? (rough time line) - I couldn't attend the Milan workshop unfortunately (other side of the world). Or alternatively, any workarounds to fix the edges after meshing? In one of my models I am having problems with non-flat and jagged patch edges causing flow instabilities. Cheers, Andrew
__________________
Dr Andrew King Fluid Dynamics Research Group Curtin University |
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October 5, 2008, 21:48 |
Hi,
I'm interested as well
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#11 |
Senior Member
Pierre-Olivier Dallaire
Join Date: Mar 2009
Location: Montreal, Quebec, Canada
Posts: 192
Rep Power: 17 |
Hi,
I'm interested as well to see when the feature will be implemented - snappy does an excellent job but I still have some problems with circle edges. Best regards, PO |
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February 10, 2009, 08:59 |
Good morning,
any update re
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#12 |
Senior Member
Pierre-Olivier Dallaire
Join Date: Mar 2009
Location: Montreal, Quebec, Canada
Posts: 192
Rep Power: 17 |
Good morning,
any update regarding this matter / does somebody was able to improve this behavior ? Best regards, PO |
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February 11, 2009, 04:55 |
Hello Pierre,
For now I gav
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#13 |
Senior Member
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Hello Pierre,
For now I gave up on snappyHexMesh for geometries with circular edges, and I am using enGrid with some excellent results (http://217.6.151.88/cms/index.php?id=4). Version 1.0 is out, with native OpenFOAM export capability. Give it a try! Regards, Jose Santos |
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February 23, 2009, 13:19 |
Turn down your mesh quality wi
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#14 |
Senior Member
Wolfgang Heydlauff
Join Date: Mar 2009
Location: Germany
Posts: 136
Rep Power: 21 |
Turn down your mesh quality wishes. If not possible to reach wanted mesh quality, it fails to find correspondence to geometry. Maybe this helps a little.
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September 25, 2009, 00:13 |
snappyHexMesh - feature lines in version 1.6?
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#15 |
New Member
Brent Craven
Join Date: Mar 2009
Location: University Park, PA, USA
Posts: 21
Rep Power: 17 |
Hi All,
Does anyone know if feature lines have yet been implemented in snappyHexMesh/OpenFOAM 1.6? From my experience this and more robust near-wall layer addition are the only weakness/limitations of snappyHexMesh, which is otherwise a great utility. Thanks! Brent |
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September 28, 2009, 05:48 |
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#16 |
Senior Member
stephane sanchi
Join Date: Mar 2009
Posts: 314
Rep Power: 18 |
any news about the edge/feature of snappyHexMesh ?
thanks ! Stephane OpenFOAM-1.6.x |
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September 29, 2009, 02:54 |
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#17 |
Senior Member
BastiL
Join Date: Mar 2009
Posts: 530
Rep Power: 20 |
I do not think this has made its way into 1.6.x. However there seems to be some self-made solutions hanging around somewhere. I guess they are not yet publicly available.
Regards |
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September 29, 2009, 03:01 |
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#18 |
Senior Member
stephane sanchi
Join Date: Mar 2009
Posts: 314
Rep Power: 18 |
Dear Bastil,
Could you please give me some hints about these self-made solutions ? How and where can I find these solutions (publicly available) ? Best Regards, Stephane. |
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September 30, 2009, 02:56 |
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#19 |
Senior Member
BastiL
Join Date: Mar 2009
Posts: 530
Rep Power: 20 |
Well all I know is from there:
http://www.opensourcecfd.com/confere...iersEugene.pdf Maybe Eugene can provide us with some more information since I am also very interested in this. Regards. |
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March 1, 2011, 06:03 |
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#20 |
New Member
Hannes
Join Date: Dec 2010
Location: Oldenburg, Germany
Posts: 17
Rep Power: 15 |
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