# Internal walls of zero thickness

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 April 6, 2009, 01:50 #21 Senior Member     Daniel WEI (老魏) Join Date: Mar 2009 Location: Beijing, China Posts: 689 Blog Entries: 9 Rep Power: 14 Sponsored Links Hi again, I found the solution, use the normalToFace option in faceSetDic Code: ``` // Faces with normal to within certain angle aligned with vector. normalToFace { normal (0.309016994 0.951056516 0); // Vector cos 0.000000001; // Tolerance (max cos of angle) }``` Note: as for zero thickness plate, set cos option a small one, (use foamToVTK -faceSet plateTmp to Check it). What a nice day! Daniel __________________ ~ Daniel WEI ------------- Boeing Research & Technology - China Beijing, China Email

 March 19, 2015, 10:21 #22 New Member   Join Date: Mar 2015 Posts: 11 Rep Power: 4 It may seem weird to answer to a post so long after it was written, but as i fell on it today, i'm thinking that maybe i could help other people having this problem. A very simple trick to create a thin wall in an internal face is to create a point with the same coordinates than on of those which are on the internal face. Then, define the faces and the blocks as if one of the points was on one side of the face, and the other point was on the other face. This way, the mesh is identical to the one created before, exept that there is no more an intern face, and defining a wall patch there becomes trivial. mizzou likes this.

December 15, 2015, 03:06
#23
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Mojtaba Amiraslanpour
Join Date: Jun 2011
Location: Zanjan, Iran
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Quote:
 Originally Posted by sati It may seem weird to answer to a post so long after it was written, but as i fell on it today, i'm thinking that maybe i could help other people having this problem. A very simple trick to create a thin wall in an internal face is to create a point with the same coordinates than on of those which are on the internal face. Then, define the faces and the blocks as if one of the points was on one side of the face, and the other point was on the other face. This way, the mesh is identical to the one created before, exept that there is no more an intern face, and defining a wall patch there becomes trivial.
Wouldn't this lead into a new block, which has absolute poor cells within it?
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