[Joe Wang]

Thank y'all. This thread and the replies help me a lot.

[klilla]

Dear All,

I have a question regarding using the porosity approach for unsteady flows. In the past (v2.x, I do not exactly remember), there was a function pZones.ddt to take into account the delay due to the superficial velocity, but when I look at the class definition of the porous zones in /src/finiteVolume/cfdTools/porosityModel/porosityModel, I cannot find such functionality as there was before. Why is it so?
Thanks for your comment on this,
Lilla

[krndv]

Hello All,

I am solving a case with a geometry having multiple porous zones, means each zones have different values of D anf F.

For simplicity consider it as a rectangular dust with 3 poorus zones.

If I want to use snappyHexMesh, Can I just draw a rectangle and mesh with out seperating zones and later define cellzones using toposet?

[klilla]

Yes, you can. Though you should double check if your zones defined well. Moreover, you might end up having zones slightly smaller or larger, depending where you have a face-layer ending.

But otherwise, it is a fast and easy way to do it.

[krndv]

Can you please give short idea about setting up topoSetDict?

[sniggy]

Hi Everyone,
I am new to openfoam. I want to model a moving packed bed with air flow. I also want to do a heat transfer in the porous solid and fluid. Moving packed bed, I suppose, can be solved by moveDynamicMesh. The air flow dynamics can be solved i a fixed poros media by porousSimpleFoam. But I dont have any idea ho to solve them together?