[EnriqueP]

Hello,

I'm trying to setup a velocity which changes its value depending on time (attahced figure), in an inlet boundary condition.

The UDF that I have written is the following:
DEFINE_PROFILE(y_velocity,t,i)
{
real T, H; /* variable declarations */
face_t f;
T = 1;
H = 3;

begin_f_loop(f,t)
{
if(CURRENT_TIME <= T/2)
F_PROFILE(f,t,i) = 0;
else if (CURRENT_TIME <= 3*T/2 && CURRENT_TIME >T/2)
F_PROFILE(f,t,i) = 4*H/pow(T,2)*pow(CURRENT_TIME-T,2)-H;
else
F_PROFILE(f,t,i) = 0;
}
end_f_loop(f,t)
}

I am quite new to UDFs and Im having some trouble.
Any help would be really appreciated. Thank you.

Enrique P.
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