[snappyHexMesh] Create patches after snappyHexMesh

sisetrun · April 21, 2015, 06:51

Hello Foamers,

I successfully created my mesh using snappyHexMesh (tube with a sphere inside; or better: cylinder with flow resistance).

Now, I want to define an inlet / out / wall patch for my BC.

What is the best way to do this after snappyHexMesh?

Thanks a lot

sisetrun · February 9, 2017, 09:27

I found my own thread and meanwhile a have the solution:

once you have created your mesh, you can use the setSet utility to make a cellSet c1 from given stl by surfaceToCell.

*Than, make a faceSet f1 from the cellSet c1.
*Make a second faceset f2 with patchToFace from the patch (existing patch after mesh generation)
*Subset f2 with f1

use the resulting f2 in the createPatch utility
-> edit the BC for the new patch

April 21, 2015, 06:51	Create patches after snappyHexMesh	#1
sisetrun Member Sebastian Trunk Join Date: Mar 2015 Location: Erlangen, Germany Posts: 60 Rep Power: 11	Hello Foamers, I successfully created my mesh using snappyHexMesh (tube with a sphere inside; or better: cylinder with flow resistance). Now, I want to define an inlet / out / wall patch for my BC. What is the best way to do this after snappyHexMesh? Thanks a lot

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February 9, 2017, 09:27		#2
sisetrun Member Sebastian Trunk Join Date: Mar 2015 Location: Erlangen, Germany Posts: 60 Rep Power: 11	I found my own thread and meanwhile a have the solution: once you have created your mesh, you can use the setSet utility to make a cellSet c1 from given stl by surfaceToCell. Than, make a faceSet f1 from the cellSet c1. Make a second faceset f2 with patchToFace from the patch (existing patch after mesh generation) *Subset f2 with f1 use the resulting f2 in the createPatch utility -> edit the BC for the new patch