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Old   November 16, 2005, 20:31
Default UDF - PLease help!!
Vidya Raja
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I'm trying to use UDF to simulate unsteady velocity in Fluent. My equation is as follows:

Q = 0.35 + 0.35 * sin(2*pi*0.5*t)

I wrote the following code in C in order to hook it to Fluent:

#include "udf.h"

DEFINE_PROFILE(unsteady_velocity, thread, position) { face_t f; real t = CURRENT_TIME;

begin_f_loop(f, thread)


F_PROFILE(f, thread, position) = 0.35 + 0.35*sin(2*pi*0.5*t);

} end_f_loop(f, thread) }

But Fluent refuse to read it and gives an error called PARSE ERROR - LIne 1. Also it crashes whenever I try to make it read the UDF. I have no clue why this is happening.

Could anyone explain this and tell me how it can be corrected?

Any help is greatly appreciated.

Thanks, Vidya
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