[snappyHexMesh] snappyhexmesh locationinmesh many bodies

jacobCFD · July 23, 2024, 06:52

Hello,
let say I have CHT problem with 50 bolts. Do I have to have 50 regions and manually define 50 insidePoint??

Is it possible to have all 50 bolts in only 1 region, since there is only one material and field (T)?

AtoHM · July 23, 2024, 09:09

Not necessarily. The regions are also kept (meshed) if you specify a faceZone and a cellZone for it (you need faceZone to produce cellZone) in snappyHexMeshDict / refinementSurfaces / ... . You end up with 1 region per bolt, but it appears you can merge them, I hope this link helps: merge or combine several cellZone

jacobCFD · July 23, 2024, 09:16

Yeah, but will I need to define 50 insidePoint?

jacobCFD · August 1, 2024, 07:53

Allright, I achieved this by having correctly directed normals for stl face elements and

BOLT { level ( 4 4 ) ; faceZone BOLT; cellZone BOLT; mode inside; }

splitMeshRegions -cellZonesOnly -overwrite

July 23, 2024, 06:52	snappyhexmesh locationinmesh many bodies	#1
jacobCFD New Member Join Date: Dec 2022 Posts: 3 Rep Power: 4	Hello, let say I have CHT problem with 50 bolts. Do I have to have 50 regions and manually define 50 insidePoint?? Is it possible to have all 50 bolts in only 1 region, since there is only one material and field (T)? Last edited by jacobCFD; July 23, 2024 at 09:45.

August 1, 2024, 07:53		#4
jacobCFD New Member Join Date: Dec 2022 Posts: 3 Rep Power: 4	Allright, I achieved this by having correctly directed normals for stl face elements and BOLT { level ( 4 4 ) ; faceZone BOLT; cellZone BOLT; mode inside; } splitMeshRegions -cellZonesOnly -overwrite Yann likes this.

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July 23, 2024, 09:09		#2
AtoHM Senior Member M Join Date: Dec 2017 Posts: 703 Rep Power: 13	Not necessarily. The regions are also kept (meshed) if you specify a faceZone and a cellZone for it (you need faceZone to produce cellZone) in snappyHexMeshDict / refinementSurfaces / ... . You end up with 1 region per bolt, but it appears you can merge them, I hope this link helps: merge or combine several cellZone

July 23, 2024, 09:16		#3
jacobCFD New Member Join Date: Dec 2022 Posts: 3 Rep Power: 4	Yeah, but will I need to define 50 insidePoint?