Hello, I have this UDF and it says that the airfoil changes the degree to +/- 8 through 1 sec, how is to work and how can we control the angle?
/**********************************************/
/* flap.c */
/* UDF for specifying a time-varying omega */
/* */
/* Simulates +/- 8 deg flapping with cycle of */
/* of 1 sec. */
/* */
/* Version 13.0 */
/* */
/**********************************************/
#include "udf.h"
#define PI 3.141592654
DEFINE_TRANSIENT_PROFILE(speed, time)
{
real ampl = 2.0*PI/15.0;
real freq = 2.*PI;
real omega;
omega = 2.0*PI*ampl*cos(freq*time);
return omega;
}
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