Friction factor (Cs) -- CFD Online Discussion Forums

August 22, 2013, 21:02	Friction factor (Cs)	#1
palplr New Member Palaniappan Ramanthan Join Date: Aug 2013 Location: Pune Posts: 1 Rep Power: 0	What is the value of surface roughness Cs (Friction factor for walls) for Brick wall in a Flue stack. Is there a correlation between the Surface roughness Cs in fluent and the actual surface roughness E. For cement the actual E is 0.9 to 9 (mm), while for steel it is 0.05. In Fluent the Value of Cs can be varied from 0 to 1 only. To Add More, it is Flue gas flow analysis of a boiler chimney with a apporximate height of 200 meters. The Chimney is brick lined and cemented. waiting for replies ..... Last edited by palplr; August 29, 2013 at 20:19.

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