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-   -   simulation of wall with holes (http://www.cfd-online.com/Forums/cfx/125355-simulation-wall-holes.html)

bitacovir October 23, 2013 22:48

simulation of wall with holes
 
I am trying to simulate wind blowing on a flat wall. 1.6m height and 4m length. (50mm thick).
Following several tutorials I could generate a mesh and insert a inflation layer on the surface of the wall. When I run a simulation the chart of convergence showed that RMS Residual Error Values have reduced to less than e-04 that I understand is good.
Then, I change the wall geometry with a wall with same size but including a vertical gaps producing a 20% of porosity in the wall.
http://fencescape.com.au/wp-content/...e1-300x225.jpg
I use the same parameters to produce the mesh and the inflation, but when I run the simulation the convergence remains between e-03 and e-04.
What do you think I can change or improve to results? Why is different when the surface of the geometry has holes?

ghorrocks October 24, 2013 06:28

FAQ: http://www.cfd-online.com/Wiki/Ansys...gence_criteria

bitacovir October 24, 2013 07:54

Quote:

Originally Posted by ghorrocks (Post 458722)

Thanks. I didn't know about this FAQ


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