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How can I impose variable boundary conditions?
Hi Guys!
How can I define variable boundary conditions such as variable temperature on a wall? I believe that I should use UDF. Which parts of the UDF Manual help me most. Any hint? Thanks Good luck |
That's right you have ti write an UDF :
I used to do it with the velocity but it should be the same with the temperature. This is an example of a UDF of an unsteady velocity (you can find it in the UDF user guide of Fluent) (in the part boundary counditions and details UDF examples) /************************************************** ******************** }unsteady.c UDF for specifying a transient velocity profile boundary condition ************************************************** *********************/ #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) When your UDF is written you have just to interpret it in Fluent !!! |
Thanks man.
I have started reading UDF Manual |
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