Hi, I would like imposed on the boduary variation profil temperature. E.g. temperatue variation is to be specified as: T(y)=20*[1-(y/20)^2]. This is my Udf: #include "udf.h" DEFINE_PROFILE(temperature,t,i) { real x[ND_ND]; real y; face_t f; begin_f_loop(f,t) { F_CENTROID(x,f,t); y = x[1]; F_PROFILE(f,t,i) = 20.*(1.-(y*y/20.*20)); } end_f_loop(f,t) }

Where is mistake!? This bonduary condition I imposed to type: wall in overlap thermal, thermal condition: temperature.

Please help me!!!

Thanks lot.

Tomik

F_PROFILE(f,t,i) = 20.*(1.-(y*y/20./20.))

Also note that your udf will not return temperature values above 20 K, really cold in my opinion.

RoM