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Old   June 11, 2002, 08:32
Default UDF syntax error
  #1
Duc
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Hello, I am new at using UDF in Fluent, as a result, I tried create a UDF for unsteady flow, as described in the user manual. For some reason, when I try to interpret the function, it keep coming up with

Line 2: Syntax error

Can anyone suggest what I'm doing wrong? thanks in advance.

Duc ------

#include "udf.h" DEFINE_PROFILE(unsteady_velocity, thread, position)

{ face_t f;

begin_f_loop(f, thread)

{ real t = RP_Get_Real("flow-time"); F_PROFILE(f, thread, position) = 42.41*cos(9424.778*t);

}

end_f_loop(f, thread) }

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Old   June 11, 2002, 09:03
Default Re: UDF syntax error
  #2
Ale
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You probably simply need to insert a return before DEFINE_PROFILE:

#include "udf.h"

DEFINE_PROFILE(unsteady_velocity, thread, position)

{ face_t f;

begin_f_loop(f, thread)

{ real t = RP_Get_Real("flow-time"); F_PROFILE(f, thread, position) = 42.41*cos(9424.778*t);

}

end_f_loop(f, thread) }

I did it and I interpreted your code without any error message by FLUENT. I hope this can help you; anyway, I think it could depend on the C compiler you use.

Good luck, Ale
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Old   June 11, 2002, 09:27
Default Re: UDF syntax error
  #3
Duc
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It may be something to do with my settings, as I've used the code you wrote without sucess. Just so strange. thanks for you help.
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