[WidenerStudent]

Hello I am trying to create a flapping wing motion in Fluent. I have seen many different videos so I know it is possible. However I have not been able to see any tutorials that explain how this is done. Any help is much appreciated!!

[ronak]

Hi
Have U found sth that helps to simulate a flapping motion?

[Zigec]

Are you searching for something like this:

https://www.youtube.com/watch?v=Uktp5lBy0OU

https://www.youtube.com/watch?v=o8NDsAcfThQ

?

[ronak]

Originally Posted by Zigec

Are you searching for something like this:

https://www.youtube.com/watch?v=Uktp5lBy0OU

https://www.youtube.com/watch?v=o8NDsAcfThQ

?

They're useful. I already know how to simulate pitching but not flapping. probably I'm not using the proper UDF. I used this UDF for pitching motion:
#include "udf.h"

DEFINE_CG_MOTION(airfoil, dt, vel, omega, time, dtime)
{
real a, w, pi;

pi = 3.14159265;
a = (15*pi)/180; /* pitch amplitude */
w= 0.3; /* angular velocity */


/* define airfoil motion */

omega[2] = a*w*cos(w*time);


}


I'll appreciate if you help me in order to simulating pitch & plunge

[moh_zain]

Hi you just need to define pitch & plunge motion equ

like omega [1]=

omega[2]=

[ronak]

Thanks Mohammad!

You're right !