A simple heat transfer problem ?
 

Hi everybody,
I'm trying to model a very simple problem but i can't find any way to do it with FLUENT. In fact, it's a simplified heat exchanger in 2D, one hot channel and one cold separated by a solid wall (thickness non negligible). My problem is that : I cannot imposed a heat flux continuity through my solid, all I have is walls where i could fix a temperature or a heat transfer coef, but this is not I want to do ...
I'm very surprised to be stuck on this with such a software ....
Any idea ?
Thanx

Maybe is it not possible ?