ineffective wall roughness -- CFD Online Discussion Forums

August 7, 2013, 19:15	ineffective wall roughness	#1
feizaghaee Senior Member moein Join Date: Dec 2009 Posts: 132 Rep Power: 16	Hi experts. I'm simulating a weir. I want to know the effect of roughness of weir on velocity. I've done mesh sensitivity analysis and I checked various values of roughness but nothing has been changed. does anyone know where the problem is? any help would be appreciated.

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