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-   -   convert measured roughness to sand grain roughness (http://www.cfd-online.com/Forums/cfx/134501-convert-measured-roughness-sand-grain-roughness.html)

Catherine79 April 30, 2014 09:25

convert measured roughness to sand grain roughness
 
Hello,
I am comparing different CFD codes and I am unfortunately not an expert on CFX. Can somebody explain me which factor CFX uses to convert measured roughness into sand grain roughness which is then used in the wall functions?

ghorrocks April 30, 2014 18:59

This is discussed in the documentation- theory guide, section 2.8.1.4.


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