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What's the meaning of Cm (moment coefficient)?

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Old   December 26, 2005, 04:54
Default What's the meaning of Cm (moment coefficient)?
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Pathway
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I research the wind turbine and use Fluent to simulate problems. I want to know the moment of wind turbine and Fluent can report Cm. Therefore I don't know the meanings of Cm definitely. I had found all the PDF files of Fluent, but I can't find the meanings of Cm (moment coefficient)? I not only want to know the physical meanings of Cm but also its mathematics' equation. Thank you so much!

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Old   January 5, 2006, 13:11
Default Re: What's the meaning of Cm (moment coefficient)?
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sharuk
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it's good i find someone working on the same area, the moment which fluent refers is the torque coeffcient of the rotor,
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Old   January 6, 2006, 00:31
Default Re: What's the meaning of Cm (moment coefficient)?
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Pathway
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Thank you for your response. And I want to know where you find this relationship. What the relationship between Cm and torgue? Sincerely.
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Old   January 6, 2006, 00:41
Default Re: What's the meaning of Cm (moment coefficient)?
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sharuk
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if u've any idea about ur generator torque and blade inertia, then u can find the rpm of the ur rotor at desired TSR, so giving same inputs to fluent, the aerodynamic moment of ur rotor/blade u get is equal to ur torque.
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Old   January 6, 2006, 00:50
Default Re: What's the meaning of Cm (moment coefficient)?
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Pathway
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Thank you so much. And I will try the method you said.
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Old   January 6, 2006, 03:45
Default Re: What's the meaning of Cm (moment coefficient)?
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Bunmi
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Cm is the convergence history of your moment
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