Simple UDF problem
 

Hello all,

I have a small problem, that im sure is not difficult to solve, but i cant get my head around it. Im using the following udf to produce a vibrating wall.

#include "udf.h"

DEFINE_CG_MOTION(wave, dt, vel, omega, time, dtime) { vel[0]=0.00004*sin(5*time); } It all works fine on a vertical boundary moving normal to itself, but i dont know how to alter the code so that I can use it on a horizontal boundary moving normal to itself.

Any ideas? Thanks Leigh

Re: Simple UDF problem
 

vel[0] represents the velocity in x-direction. change this to vel[1] or vel[2] for the y and z directions

Re: Simple UDF problem
 

Thanks alot, much appreciated!!

Leigh