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Old   May 11, 2008, 09:48
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Geri
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Helo!

I use a very simple udf to define rigid body motion as follows:

#include "udf.h"

DEFINE_CG_MOTION(flutter, dt, vel, omega, time, dtime); { omega[2] = 0.1*cos(time); }

It works, the body moves as desired, but if i use "omega[2] = 0.1*cos(10*time);" or i multiply the "time" with anything, the Fluent rotates the body not with the defined aplitude, something goes wrong...

Can anybody help me?

Thanks
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