wall roughness -- CFD Online Discussion Forums

June 3, 2009, 05:06	wall roughness	#1
duaiduaihu New Member Eric Join Date: Apr 2009 Posts: 23 Rep Power: 17	hi! can anyone tell me how to define wall rougness parameters(Roughness Height and Roughness Constant)? the diameter is 27mm. roughness is 2%. is that to say the Roughness Height is 5.4e-4? thanks!

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