friction factor in an annulus with an inner rough surface -- CFD Online Discussion Forums

May 29, 2011, 14:48	friction factor in an annulus with an inner rough surface	#1
George89 New Member Jerzy Join Date: May 2011 Posts: 1 Rep Power: 0	Hello everyone, It is m first post in those forums and I just recently started using CFX (and doing any fluid dynamics) - please forgive me if I am asking about silly things. What I would like to do is to estimate friction factor for an inner annulus wall with roughness elements of known height and spacing. I managed to build the geometry and set the physics - it is a one phase turbulent flow - since I did have some experimental data. I would be very grateful for any help with how use CFX for estimation of friction factor for the rough inner wall surface. Thanks in advance for your help, George

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