CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM > OpenFOAM Meshing & Mesh Conversion

[snappyHexMesh] Thin Surfaces / internal Walls in SnappyHex - Problem with patch allocation

Register Blogs Members List Search Today's Posts Mark Forums Read

LinkBack Thread Tools Search this Thread Display Modes
Old   September 6, 2011, 06:28
Default Thin Surfaces / internal Walls in SnappyHex - Problem with patch allocation
Join Date: Apr 2009
Location: Schleswig, Germany
Posts: 38
Rep Power: 17
Hannes_Kiel is on a distinguished road

sorry for reposting here, but I fear my question would get lost in the subforum otherwise.

I'm trying to generate a mesh around a thin surface / internal wall like a sail. Basically, it works fine, the STL surface mesh is found, properly resolved and written out as external faces / boundary patch. My problem is the following: I haven't managed to assign different boundary patch identifiers to the two sides of the surface, both sides are within one patch with associated normals pointing both directions. I cannot separate them by mergeOrSplitBaffles as the nodes of both sides are not identical. When importing two identical STL surfaces meshes with opposed normals, I get two patches, both seriously fragmented. I know that some have just assigned a finite thickness to their geometry when working on similar problems, others (Russo et al) have written additional routines to get around it. I'm trying to avoid both.

Does anybody know whether a) there is a way to either generate a volume mesh around an infinetly thin geometry with both sides in separate boundary patches or b) split the single boundary patch into two along the edges?

Hannes_Kiel is offline   Reply With Quote


sail, snappyhex, thin

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
steadyUniversalMRFFoam Tutorial fails in MixingPlane HenrikJohansson OpenFOAM Bugs 0 February 14, 2019 04:48
[snappyHexMesh] SHM Layer Addition Phase dickcruz OpenFOAM Meshing & Mesh Conversion 4 November 1, 2018 07:05
Near wall treatment in k-omega SST Arnoldinho OpenFOAM Running, Solving & CFD 38 March 8, 2017 13:48
CheckMeshbs errors ivanyao OpenFOAM Running, Solving & CFD 2 March 11, 2009 02:34
Multicomponent fluid Andrea CFX 2 October 11, 2004 05:12

All times are GMT -4. The time now is 02:54.