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SnappyHexMesh featureEdgeMesh

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Old   July 16, 2008, 09:00
Default Hi, I am testing the new me
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Fabian Braennstroem
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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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Old   July 16, 2008, 10:17
Default Fabian, what do you need "f
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BastiL
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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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Old   July 16, 2008, 10:53
Default The attache picture is actuall
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Fabian Braennstroem
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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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Old   July 16, 2008, 11:39
Default As said before AFAIK feature l
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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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Old   July 16, 2008, 17:16
Default The mesher does not do feature
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Mattijs Janssens
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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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Old   July 17, 2008, 01:54
Default So it is more a kind of wrappi
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Fabian Braennstroem
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So it is more a kind of wrapping approach!?
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Old   July 17, 2008, 02:24
Default I think Andrew said in his tal
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Mark Olesen
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I think Andrew said in his talk that the edges between different patch regions will be preserved.
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Old   July 17, 2008, 08:33
Default One of my colleagues is workin
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Eugene de Villiers
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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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Old   July 17, 2008, 14:21
Default O.k., I was a bit late and mis
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Fabian Braennstroem
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O.k., I was a bit late and missed the presentation.
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Old   August 26, 2008, 00:09
Default Hi, Any idea when feature
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Andrew King
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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
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Old   October 5, 2008, 21:48
Default Hi, I'm interested as well
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Pierre-Olivier Dallaire
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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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Old   February 10, 2009, 09:59
Default Good morning, any update re
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Pierre-Olivier Dallaire
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Good morning,

any update regarding this matter / does somebody was able to
improve this behavior ?

Best regards,

PO
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Old   February 11, 2009, 05:55
Default Hello Pierre, For now I gav
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Jose Luis Santos
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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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Old   February 23, 2009, 14:19
Default Turn down your mesh quality wi
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Wolfgang Heydlauff
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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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Old   September 25, 2009, 00:13
Default snappyHexMesh - feature lines in version 1.6?
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Brent Craven
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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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Old   September 28, 2009, 05:48
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any news about the edge/feature of snappyHexMesh ?

thanks !

Stephane
OpenFOAM-1.6.x
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Old   September 29, 2009, 02:54
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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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Old   September 29, 2009, 03:01
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stephane sanchi
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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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Old   September 30, 2009, 02:56
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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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Old   March 1, 2011, 07:03
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Quote:
Originally Posted by bastil View Post
As said before AFAIK feature lines are not yet implemented. Maybe ...
A lot of water flew down the river until yet.
Can anyone tell me if feature lines are now implemented?
Thanks.
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