compressible flow through porous media
 

Hello,

I am trying to model a oscillatory flow(fluid will move back and forth from heat exchanger at the rate of oscillation 300Hz) through the heat exchanger of very small size. For that I am considering or modeled heat exchanger as a porous media and I want to maintain the temperature of heat exchanger at 600 K and gas temperature is less than the heat exchanger temperature. So, heat will flow from heat exchanger porous material to the gas.

For this situation, I am modelling compressible flow (I think, I should use Density based solver...?) through porous media. But during the input of porous media in fluent "Fixed Value" option is not working when density based solver is activated. It is only working with Pressure based solver.

Any one can guide me on this.........? How can I set the constant temperature of porous media while using density based solver?