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convert measured roughness to sand grain roughness

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April 30, 2014, 10:25	convert measured roughness to sand grain roughness	#1
Catherine79 New Member Catherine Meissner Join Date: Apr 2014 Posts: 1 Rep Power: 0	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?

April 30, 2014, 19:59		#2
ghorrocks Super Moderator Glenn Horrocks Join Date: Mar 2009 Location: Sydney, Australia Posts: 17,852 Rep Power: 144	This is discussed in the documentation- theory guide, section 2.8.1.4.

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