[K-al-Eps-o]

Hi,

I want to study the boundary layer intereaction with filter (thin mesh fabric in my experimental setup) inside a square duct (e.g bounded boundary layer flow).

I started with a 2D rectangular domain with a cellZone and faceZone used with the "Change flow direction" source term to model the filter. Even though this model allows to specify a pressure drop, the user can only specify a unique fixed flow angle at exit, but it doesn't make a lot of sense.

In fact, I would like to implement a refraction angle i.e a local outlet angle, function of the local filter inlet angle.

Is there a way to do it with this source term?
Would it be possible to change the source code to allow this?
Would another source term be more suited ?

Any comment would be much appreciated