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-   -   circle define (http://www.cfd-online.com/Forums/openfoam-meshing-blockmesh/117899-circle-define.html)

immortality May 17, 2013 01:07

circle define
 
whats the command for defining a semi-circle(a piece of arc!) by blockMesh?
I want to model a circular tank that is attached to a pipe,how to do it?(maybe defining a full circle and add it with a rectangle,how?)

haakon May 18, 2013 05:03

Have you seen the cylinder tutorial for potentialFoam? It contains a mesh around half a cylinder, and it should be fairly easy to extend it both for a complete cylinder and a full 3D case. It does describe how to create an arc fairly well.

See the tutorial folder: tutorials/basic/potentialFoam/cylinder

Also see the the "OpenFOAM programmers Guide" page P-41. This guide is located at: doc/Guides-a4/ProgrammersGuide.pdf

But for your case (internal flow in pipe) it is of course slightly different, but it is not necessarily more difficult. See the following links for reference/inspiration:
http://image.bayimg.com/dapdiaabn.jpg
http://openfoamwiki.net/index.php/Si...rupt_Expansion

Good luck.

immortality May 18, 2013 08:04

thank you Hakon
the first link is baned here.could you please send it by attaching?
thanks.

haakon May 18, 2013 09:48

1 Attachment(s)
See attached img.


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