[Arnaud]

Hello,

I am simulating the cooling down of the air through an heat exchanger.
It has aluminium fins.

I need that you validate (or not) my thought.

I want to put the right pressure drops in the flow direction (Z) and to forbid the flow in the other direction (becaus of the fins).

* viscous resistance = f(1/permeability)
-> Z : 0 (no material in this direction)
-> X,Y : high value to forbid the flow in this direction

* inertial resitance = f(pressure loss per unit lenght along the flow direction)

-> Z : the coefficient I've calculated to obtain the good pressure drop
-> X,Y : 0 (no friction pressure drop in this direction)

What do you think about that?

Thank you for each answer.