[somasekhar]

Can any one help me for UDF

Inlet velocity profile of Laminar fully developed Poiseuille flow for 2D case. Thanks in Advance

[pakk]

Of course we can help you.

Show your attempts and we will assist.

[somasekhar]

In my case viscosity is constant, I want to give at inlet fully developed condition. Average velocity 1 m/s. channel radius 0.25 mm

#include "udf.h"
DEFINE_PROFILE(x_velocity,thread,index)
{
real x[ND_ND];
real y;
face_t f;
begin_f_loop(f,thread)
{
F_CENTROID(x,f,thread);
y = x[1];
F_PROFILE(f,thread,index) = 1.0 - y*y/(0.25*0.25)*1.0;
}
end_f_loop(f,thread)
}