inlet in function of outlet
 

Hi,

I am simulating a hot water tank. I would define the inlet condition in function of the temperature at the outlet. When the outlet temperature is less than 323.15K the mass flow inlet is 0.694. If the temperature is over 323.15K the mass flow inlet is 0. I know I have to use an udf with a DEFINE_PROFILE, but I don't know how to write my loops. Could somebody help me? Thanks a lot