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[mesh manipulation] How to separate frontAndBack |
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January 25, 2021, 23:20 |
How to separate frontAndBack
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#1 |
Member
Join Date: Jun 2016
Posts: 99
Rep Power: 10 |
Hello all,
I have a 2D mesh from fluent. When I run fluentMeshToFoam, it is automatically converted to a single layer 3D mesh. The front and back planes are combined in a single patch named "frontAndBackPlanes". There is a tutorial that splits the boundary patch: patch splitting for different boundary conditions However, since "front" and "back" patches share the same cell, this trick doesn't work. I know that the ultimate solution is to make a single-layer 3D mesh in fluent but is there any workaround to do it within OpenFOAM? Thanks! |
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January 26, 2021, 09:51 |
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#2 |
Senior Member
anonymous
Join Date: Jan 2016
Posts: 416
Rep Power: 14 |
Hi!
Maybe it is a silly question, but why do you need to split it? 2D mesh -> front and back are empty, and you will need the same BCs there. Also you shouldn't evaluate anything there so I think there is no reason for that. BTW: check the topoSet and createPatch utlities. |
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January 26, 2021, 10:42 |
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#3 | |
Member
Join Date: Jun 2016
Posts: 99
Rep Power: 10 |
Quote:
Or is there anyway to get a 2D face patch from Fluent directly? |
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January 26, 2021, 10:53 |
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#4 |
Senior Member
anonymous
Join Date: Jan 2016
Posts: 416
Rep Power: 14 |
Well. Then it would be nicer to do it with blockMesh.
As I know you can't do it. So it this case I would go with topoSet+createPatch and extrude that patch. Or simply do it in fluent which is the easiest way. And as you originally asked: "is there any workaround to do it within OpenFOAM?" Yes, there is a workaround for nearly everything in OpenFOAM, but in the worst case you have to code a little. |
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fluentmeshtofoam |
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