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 maperik June 19, 2011 20:48

calculating n plotting moments coefficients

dear all....
i want to ask something...how to obtain moments coefficient on the CFD-Post?
which function can i use?i've tried using the "torque" function but the results were not as i expected. i guess it should use the "torque" function, but the choice of the axis there is only X, Y and Z.there is no choiceof the Y-axis at 1/4 chord.
what's the solution? do i have to start again from ICEM to put the center of axis at 1/4 chord or wing?

thanks before

 pavitran June 20, 2011 01:37

Hi

1. You can make a local coordinate frame in post at any location.
2. Get the x,y,z co-ordinates of the 1/4th location and create the new co-ordinate frame.
3. While calculating torque in function calculator, you can choose the new co-ordinate frame.

 maperik June 20, 2011 09:59

Quote:
 Originally Posted by pavitran (Post 312669) You can make a local coordinate frame in post at any location. Get the x,y,z co-ordinates of the 1/4th location and create the new co-ordinate frame. While calculating torque in function calculator, you can choose the new co-ordinate frame.
ooh....
i see...i will try your suggestion. thanks a lot :)

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