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[GAMBIT] Boundary Layer without using Cooper scheme |
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March 4, 2011, 05:25
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Boundary Layer without using Cooper scheme
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#1 |
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Senior Member
Join Date: Feb 2011
Posts: 140
Rep Power: 15  |
Dear all,
does anybody know, whether it’s possible to create a boundary layer at the inner wall of a geometry, if I am not using the Cooper scheme to create my volume mesh? My problem is: I want to mesh the geometry of a vessel having a bifurcation. At this I want to create a boundary layer of hexahedral elements, because I need a good spatial resolution close to the wall. Afterwards I would like to fill up the rest of the geometry with tetrahedral or unstructured hexahedral elements. Unfortunately gambit refuses to mesh the surface via “Quad Map” or “Quad Submap” and due to the bifurcation I cannot use the Cooper scheme. Does anybody have an idea how I can get such a hexahedral boundary layer by using Gambit or Tgrid? Thanks a million, Lilly |
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March 4, 2011, 09:15
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#2 |
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Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
you can mesh your surface with tri, and your BL will be made of wedges.
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In memory of my friend Hervé: CFD engineer & freerider  |
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March 9, 2011, 09:07
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just tets in volume
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#3 |
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Senior Member
Join Date: Feb 2011
Posts: 140
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Thank you for your help!
I tried to do so, but unfortunately the Boundary Layer only exists on the surface and the volume is filled up just with tets in this case... Do you have any idea what I did wrong? Thanks a million, Lilly |
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March 9, 2011, 09:10
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#4 |
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Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
post pictures
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In memory of my friend Hervé: CFD engineer & freerider |
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March 9, 2011, 09:48
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pics
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#5 |
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Senior Member
Join Date: Feb 2011
Posts: 140
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I attached two pics that I shot in the "Examine Mesh" mode.
Thank you! Lilly |
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March 9, 2011, 10:29
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#6 |
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Super Moderator
Maxime Perelli
Join Date: Mar 2009
Location: Switzerland
Posts: 3,297
Rep Power: 41 |
where did you apply the BL?
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In memory of my friend Hervé: CFD engineer & freerider Last edited by -mAx-; March 9, 2011 at 10:59. |
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March 17, 2011, 15:14
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#7 |
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Senior Member
Join Date: Feb 2011
Posts: 140
Rep Power: 15 |
I see:I have to attach the Boundary Layer to the wall (face) of the geometry and not to the inlet and outlet edge.
It's working perfect now. Thanks a million for your help, mAx! |
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