inlet temperature = outlet temperature
 

Hi !

Anyone knows how to set as inlet temperature (in a velocty inlet bc) the value of the outlet temperature (mass weighted average) during the computation ? UDF ? Scheme in command ??

ThanX

Re: inlet temperature = outlet temperature
 

Is there any particular reason for this? From a very simple point of view one could argue: inlet temp. = outlet temp. -> adiabatic case -> no need to solve energy equation at all.

RoM

Re: inlet temperature = outlet temperature
 

It is not an adiabatic case at all. In fact, I want to simulate the flow in a cavity with many walls with different temperatures. Moreover, I would like to set the inlet temperature (in my velocity-inlet condition) as the value of the outlet temperature, which is unkwown before solving the case ! I want to do this because in the real life, the outlet of my cavity is connected to its inlet...but I don't simulate that. OK, I can do this manually, but I would prefer an automatic process. Any idea ??

ThanX

Re: inlet temperature = outlet temperature
 

In this case a DEFINE_PROFILE udf can do the job. If radiation is involved in your calculation you should be very careful while setting a temperature with DEFINE_PROFILE. Your solution will probably diverge if the temperature changes are too high.

Good Luck, RoM

Re: inlet temperature = outlet temperature
 

Thank you very much...I will try this.

Thierry.