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-   -   [DesignModeler] A beginner need a help (http://www.cfd-online.com/Forums/ansys-meshing/111275-beginner-need-help.html)

ashraf88 January 2, 2013 09:39

A beginner need a help
 
1 Attachment(s)
Hi every one,

I am trying to simulate a heat exchanger of a staggered arrangement via CFX, the problem is that I don't know how to determine the thickness of my model.

I would be grateful if you can help me. I am attaching an image for my model to clarify the issue.



Any comments will be appreciated.
Thanks so much.

jrunsten January 7, 2013 05:16

If you have symmetry boundary conditions on both sides and one cell across the thickness it shouldn't matter for results, but for convergence I think it is convenient to have a much thinner model than what you are showing.

http://www.cfd-online.com/Wiki/Ansys..._simulation.3F

"For the planar mesh the extrusion should be approximately equal to the smallest element edge length in the model"


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