[Jiwon Y]

Hello UDF experts!

I'm trying to make a up and down movement(Y-axis movement) of 0.8mm with my geometry model.

upward movement should take place with velocity of 0.65m/s during time 0~0.0014 sec.

downward movement should take place with velocity of 0.43m/s during 0.0014~0.0033 sec.

down below is my UDF but it does not compile properly

#include "udf.h"
#include "dynamesh_tools.h"
DEFINE_CG_MOTION(nozzle, dt, cg_vel, cg_omega, time, dtime)
{
/* reset velocities */
NV_S (cg_vel, =, 0.0);
NV_S (cg_omega, =, 0.0);
/* compute velocity formula */

if (time <= 0.0014)
{
cg_vel[1] = 0.65;
}

else if (0.0014 < time < 0.0033)
{
cg_vel[1] = -0.43;
}
else
{
NV_S (cg_vel, =, 0.0);
NV_S (cg_omega, =, 0.0);
}
message("\n");
message("\n y_velocity = %g \n",cg_vel[1]);
}

I also attatched my geometry file.(Trying to move all my geometry parts)
any corrections to UDF or suggestions would be VERY helpful

[AlexanderZ]

message has capital M

Message0("\n");
Message0("\n y_velocity = %g \n",cg_vel[1]);

best regards

[Jiwon Y]

Many Thanks to you..!
I have solved my UDF problem at last