hi, i want to increase inlet velocity during the simulation automatically using udf and want to get result for every set.i want to get lift drag and skin temperature for every simulation step.

Hi!

So you have to write an udf for velocity inlet. There is a very simillar example in Fluent Udf documentation.

#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) = 20. + 5.0*sin(10.*t);

} end_f_loop(f, thread) }

For lift, drag and temperature you can use the monitors (solve-monitors-force...) or better the report-force...

regards

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