[dingsheng1206]

hi every one, recently i am doing a CHT simulation related to heat transfer by using CFX. with defined AIR INLET&OUTLET conditions and WATER INLET&OUTLET conditions (mass flow and Temp. for both), two interfaces ( interface air-solid and interface water -solid) , heat transfer option and thin material and GGI method, the case normally converged, and it can be found out that the outlet temp. for air is down and that for water is up.

but
1, for the CFX CHTproblems, there is not the method like than in FLUENT just seting wall and wall-shadow to be coupled and acting the energy model, but i have to define the interface and activate heat transfer and thin material option, are there any other methods for CHT simulation in CFX? i really prefer to the easy-operating CFX.

2, it's strange that when i just changed my inlet mass flow(from 0.15kg/s to 0.3kg/s) for cooling water with others unchanged. The outlet Temp for gas and cooling Temp hardly changed, just like the same simulion.

All your replys will be appreciated. and best wishes!