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October 31, 2008, 06:30
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torque coefficient
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#1 |
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Guest
Posts: n/a
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Dear all,
Does any body know What the relation that fluent uses to compute the (torque)moment coefficient? I couldn't find something about it in the fluent documentation. thank you in advance for any help mokemex |
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October 31, 2008, 07:49
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Re: torque coefficient
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#2 |
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Guest
Posts: n/a
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Coef = Torque / (0.5*A*rho*U^2)
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October 31, 2008, 10:53
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Re: torque coefficient
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#3 |
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Guest
Posts: n/a
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Dear Max, the coefficient provided is not dimensionless but it does have a unit of m (meter). Any explanation?
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November 3, 2008, 01:42
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Re: torque coefficient
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#4 |
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Guest
Posts: n/a
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Coefficients are dimensionless. I forgot the length...
Coeff= Torque/(0.5*rho*A*L*U^2) |
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November 3, 2008, 01:51
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Re: torque coefficient
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#5 |
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Guest
Posts: n/a
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Sorry (Thanks Friend for your units-check)
Coef = Torque / (0.5*A*rho*L*U^2) |
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November 3, 2008, 15:41
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Re: torque coefficient
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#6 |
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Guest
Posts: n/a
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Happy to see your reply, hand shake
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March 10, 2010, 10:53
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#7 |
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New Member
Dennis Chen
Join Date: Mar 2010
Posts: 6
Rep Power: 16  |
Guys, I'm trying to calculate Cm but having difficult on finding moment. I use SC/Tetra and set 0.25c is the point I want to get moment value from. Shouldn't torque on a airfoil be the moment on z-axis? The values of Cm in experiment are all negative. I've tried different ways to calculate but only positive value I could get.
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