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Old   December 31, 2011, 03:53
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mht
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hello everyone:
I want to know how Fluent define the Moment Coefficient, Was it defined as: cm=M/(0.5*density*v*v)? or someelse form.

thanks a lot!
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Old   December 31, 2011, 06:41
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cm=M/(0.5*density*area*length*V*V), all taken from reference values.
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Old   January 3, 2012, 22:12
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Duri,thanks for your attention
now,I have known that cm=M/(0.5*density*area*length*V*V), and all taken from reference values. I also use Fluent Function compute_force_and_moment to get the moment,then i used the moment to get cm, I found that this cm was diffenent from the Monitors-Force-CM, Could you tell me why?
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Old   January 4, 2012, 13:29
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It will be same. Check moment origin, axis etc.
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Old   January 5, 2012, 04:18
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I think i have misused this function, could you give me a UDF that contains this function, thank you very much!
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