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April 11, 2014, 07:08 |
River mesh with slope
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#1 |
New Member
Benjamin
Join Date: Apr 2014
Location: Zürich
Posts: 27
Rep Power: 12 |
Hi all!
I'm currently dealing with a river channel model in interFoam. First i created my "river" (very simple one, one curve created with arcs) without a slope which worked well, I got the expected results with interFoam. Now, the only thing I did after was altering the z-coordinates in order to get a slope. I double and triple checked, but I still get that annoying error message when checkMesh: I'll give you some more information:
I would be really glad if someone could have a quick look at it, I am sure it's a small thing I just don't see -.- Thanks in advance, Benji PS: If someone has random river Meshes lying round, feel free Last edited by Benji; April 11, 2014 at 08:19. |
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April 11, 2014, 07:17 |
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#2 |
Senior Member
Niels Nielsen
Join Date: Mar 2009
Location: NJ - Denmark
Posts: 555
Rep Power: 27 |
Hi
Please see here http://www.cfd-online.com/Forums/ope...-get-help.html And then afterwards upload your case.
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Linnemann PS. I do not do personal support, so please post in the forums. |
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April 11, 2014, 07:31 |
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#3 |
Senior Member
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Hi,
show the description of patches of the mesh. IIRC this error may appear when it is wrong. Also you can visualize this pointSet converting it to VTK: Code:
foamToVTK -pointSet nonAlignedEdges and take a look at where the problem is located. |
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April 11, 2014, 08:21 |
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#4 |
New Member
Benjamin
Join Date: Apr 2014
Location: Zürich
Posts: 27
Rep Power: 12 |
Thanks for the quick replies.
@linneman: Thanks for the howto, I gave some more information above, I hope this will be enough. @alexeym: I opened the VTK file in paraView, but there were no problems located (in fact, nothing was shown^^) |
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April 11, 2014, 13:22 |
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#5 |
Senior Member
Niels Nielsen
Join Date: Mar 2009
Location: NJ - Denmark
Posts: 555
Rep Power: 27 |
Could you please pack the whole case and upload to dropbox.
This way it is easier to find the error.
__________________
Linnemann PS. I do not do personal support, so please post in the forums. |
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April 14, 2014, 01:56 |
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#6 |
New Member
Benjamin
Join Date: Apr 2014
Location: Zürich
Posts: 27
Rep Power: 12 |
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April 14, 2014, 03:07 |
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#7 |
Senior Member
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Hi,
you forgot to describe let's call it 'prebottom' patch (see attached picture for location, also I've plotted nonAlignedEdges point-set with red arrows). And all faces in this patch went to defaultFaces patch, which by default has type 'empty. So all the points in your mesh was not aligned with or perpendicular to non-empty directions. You have two options: 1. Describe 'prebottom' patch as usual in blockMeshDict. 2. Use changeDictionary to change type of defaultFaces from empty to wall. |
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April 14, 2014, 09:54 |
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#8 |
New Member
Benjamin
Join Date: Apr 2014
Location: Zürich
Posts: 27
Rep Power: 12 |
Jop that was it, works now, thanks!
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