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why the moment coefficient always positive..

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November 3, 2009, 01:24	why the moment coefficient always positive..	#1
nuimlabib New Member labib Join Date: Jun 2009 Posts: 25 Rep Power: 17	i am simulate the airfoil. but the moment coefficient always in positive magnitude..i using fluent cfd solver..in experimental data. the moment coeffcient always in negative magnitude..where my mistake occured. please help me..thanks

November 7, 2009, 21:49		#2
ztdep Senior Member p ding Join Date: Mar 2009 Posts: 427 Rep Power: 19	Dear friends: How to define your momentume coefficient.

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