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Moment coefficient of vertical axis wind rotor

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Old   August 28, 2008, 06:07
Default Moment coefficient of vertical axis wind rotor
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Hi, I am using fluent package for flow simulation past vertical axis wind rotors. I am using k-epsilon turbulent closure model. My problem is that the moment coefficients are coming negative, and too, in high range!! But for proper simuation it should be positive two digit numbers. I tried other turbulent models as well. But did not work out!

I am really in dilema as to what to do!

Please help me.
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