[BigBoBy]

Hello,
Is it possible to define in Ansys Fluent the temperature of the wall and additionally a heat flux going away from the wall? If that is possible what do i have to do for it?

[LuckyTran]

In Fluent, no. Mathematically it is also a no no.

Let's say you are interested in specifying both temperature and heat flux on 1 out of N surfaces. What you should do is is specify either the temperature or the heat flux on the boundary of interest. And then iterate any and all other boundary conditions on the remaining N-1 surfaces until both temperature and heat flux on the original surface match your conditions. Obviously the solution is not unique because this is not a well-posed problem and why it is a mathematical no no and also why no such feature exists. You think you want this option, but you don't.

[sbaffini]

Originally Posted by BigBoBy

Hello,
Is it possible to define in Ansys Fluent the temperature of the wall and additionally a heat flux going away from the wall? If that is possible what do i have to do for it?

Maybe you want a robin condition? In that case you can use the convective bc, by properly rearranging it.