[alven299]

Dear all,

I wish to impose a transient temperature profile to my inlet boundary condition. I have liquid entering a system at 300K and after 40s, I would like the liquid to enter at 340K, in brief:

when 0<t<40s, T=300K
when t>=40s, T=340K

I know that this is manageable by using UDF, but since I'm very new to UDF and to C programming language, I'd appreciate if anybody could provide me with a sample code to define the said profile.

many thanks.