[ned.musab]

Hello everyone,

I need help in writing UDF for pitching airfoil for the particular case using DEFINE_OUTPUT_PARAMETER
For reference please have a look at below link related to how to write UDF in the presence of Output Parameters.

https://www.sharcnet.ca/Software/Ansys/16.2.3/en-us/help/flu_ug/flu_ug_sec_report_param_out_udf.html

Actually I want to get CL(lift coefficient) values at different ''different'' AoA.

Here is my UDF:

#include "udf.h"
DEFINE_CG_MOTION(oscillating_airfoil, dt, vel, omega, time, dtime)
{
real a, w, p, pi;
pi = 3.14159265;
/* define motion variables */
a = 5*(pi/36); /* Amplitude */
w = 2 * pi *1; /* Angular Frequency */
p = pi/2; /* phase */

/* define airfoil motion */
omega[2] = -a*sin(w*time+p); /* z-component of angular velocity */


}