equivalent sand roughness height -- CFD Online Discussion Forums

August 3, 2009, 22:15		#2
Andy Chen Member Yi-Lang Chen Join Date: May 2009 Posts: 58 Rep Power: 17	Dear LSC : Did you simulate open channel on CFX? According your problem that you can use Parker(1991) Ks (sand roughness height)=6.0*D50(average grain size). I use the equation to decide roughness height when I simulated open channel. If you have any question, welcome to discuss with me.

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