udf parabolic velocity profile inlet
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Hi,
I am trying to write a UDF to give a parabolic velocity profile at the inlet of my domain. I find the following UDF in the fluent's guide: #include "udf.h" DEFINE_PROFILE(Inlet_x_velocity, thread, position) { real x[ND_ND]; /* this will hold the position vector */ real y, h; face_t f; h = 0.00015; /* inlet height in m */ begin_f_loop(f,thread) { F_CENTROID(x, f, thread); y = 2.*(x[1]-0.5*h)/h; /* non-dimensional y coordinate */ F_PROFILE(f, thread, position) = 0.22*(1.0-y*y); } end_f_loop(f, thread) } I change the value of h with my height of the inlet, but the problem is that my inlet's coordinate along Y axis starts from (x,y) = (0,700um) to (x,y) = (0,850um) , height of inlet = 150 um. How should I modify my UDF in order to apply it to my problem? Attachment 81024 |
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