[FelipeOLR]

Hi all,

I do not have much experience in CFD simulation.
I would like you to clarify to me about the simulation of flow through metal grates. I read some scientific articles on this type of simulation, in which they considered the grid to be a thin porous medium.

I use Comsol software, and there is the porous media module. However, a question arises: My model has a turbulent flow (I intend to apply the k-e turbulence model), but I do not know which flow model is used internally by the porous media module (whether it is laminar or turbulent).
I also tried to conjugate the porous media module with the k-e turbulence module. However, in doing so, I noticed that the constructed model did not change its behavior with the alteration of thin porous medium parameters (porosity and permeability), it seems that the conjunction of the two models was not successful.
It is important to note that I do not have the equivalent values of porosity and permeability of the metal grate, I was only doing tests to verify the possibility of using the porous media module.

Illustration of the geometry of the model (axissimetric geometry of a dryer)

comsol geometry.png

3D geometry.

secador geometria2.png

Thanks