# Flapping Wing

 Register Blogs Members List Search Today's Posts Mark Forums Read

 May 24, 2017, 17:10 Flapping Wing #1 New Member   Join Date: Apr 2017 Posts: 3 Rep Power: 9 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!!

 September 4, 2018, 13:12 #2 Member   Hanye Azimi Join Date: Oct 2016 Posts: 42 Rep Power: 9 Hi Have U found sth that helps to simulate a flapping motion?

 September 4, 2018, 13:23 #3 New Member   Ziga Join Date: Feb 2016 Location: Maribor, Slovenia Posts: 27 Rep Power: 10 Are you searching for something like this: https://www.youtube.com/watch?v=Uktp5lBy0OU https://www.youtube.com/watch?v=o8NDsAcfThQ ?

September 5, 2018, 04:08
#4
Member

Hanye Azimi
Join Date: Oct 2016
Posts: 42
Rep Power: 9
Quote:
 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

 September 7, 2018, 04:22 #5 Member   mohamed Join Date: Apr 2016 Posts: 34 Rep Power: 10 Hi you just need to define pitch & plunge motion equ like omega [1]= omega[2]=

 September 18, 2018, 06:24 #6 Member   Hanye Azimi Join Date: Oct 2016 Posts: 42 Rep Power: 9 Thanks Mohammad! You're right !

 Tags flapping, flapping wing, wing, wing tutorial