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-   -   Third Dimension for 2D flows ICEM CFD (http://www.cfd-online.com/Forums/cfx/23163-third-dimension-2d-flows-icem-cfd.html)

Ben October 10, 2006 09:34

Third Dimension for 2D flows ICEM CFD
 
hi folks, does anyone know a rule of thumb for the extrusion layer thickness in ICEM. I have 2D Domain 1.5 m long and 0.35m breadth. i want to use a layer thickness of 0.01m. is this ok? oh, some info to my cells: first cell in spanwise direction is 1 micromemter and in the x direction, the leading edge region has a cell size of 10 micrometer. it seems like the third dimension required by ansys cfd does have an effect on convergence. thanks in advance

Joe October 10, 2006 18:20

Re: Third Dimension for 2D flows ICEM CFD
 
Rule of thumb is to keep the thickness the same order as your smallest cell. I have violated this many times with no ill effects though ...

ben akih October 11, 2006 14:38

Re: Third Dimension for 2D flows ICEM CFD
 
thanks joe, seems like i always violate the rule of thumb. i did have problems once trying to keep the thickness as small as my smallest cell (1 micrometer) and i had convergence problems. may i was at the very far end. thanks though. ben.


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