Hello everyone. Do you know if it is possible to simulate a water filter using a porous medium in fluent? I would like to model a flow of water containing particles in a sand filter and see how the particles are captured by the filter. I am new in CFD and i'll appreciate all kind of advice.
Hi,
Right now, tt is better to try some Fluent's tutorials about following subjects:
- Meshing technique
- Multiphase flow (liquid-solid): Eulerian-Eulerian or Eulerian-Lagrangian models.
- Porous media model
When you identified the suitable model for your problem, I can give you more hints.
Hi Son,
Thank you very much for your reply! My case is rather simple : it consist of pouring dirty water (with injection of dirt particles) into a vertical cylindrical sand bed serving as a filter. In the same way as Darcy's experiment. Water flowing by gravity up to down through the sand cylinder.
I already have the mesh built under Anys Meshing. It is a simple vertical cylinder divided into 3 fluid zones. From top to bottom : water, sand (porous medium), water.
As for the porous medium, I did some experiments with the sand that I use and I evaluated its porosity at 40%. I don't have pressure drop vs velocity data. Is it really necessary to have these data or can I calculate the porous medium coefficient (inertia and viscous coefficient) just from the porosity?
I have documented myself about multiphase flows. The dirt particles present in the water being a solid phase, I think that the Eulerian-Lagrangian model would be the most adapted. The objective of my simulation is to see these particles be captured or not by the filter according to their size. Do you think such an experience is feasible?
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