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Porous media modelling vs outlet vent BC

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Old   June 7, 2019, 05:38
Default Porous media modelling vs outlet vent BC
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Amey Raju Pawade
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I am simulating an Air filter assembly, which has a perforated sheet with 50% opening area and 1.6 mm thick at the outlet.

I can model the perforated sheet as outlet vent BC by providing the loss coefficient as obtained by empirical relations and outlet gauge pressure of 0 Pa.

The other way is to assume the volume of the sheet as a porous media and model the particular volume with the calculated inertial resistance coefficient and the outer face as pressure outlet BC with gauge pressure of 0 Pa.

Are both the approaches correct and can be used?

Help will be appreciated.
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fluent 14.5, outlet boundary condition, outletvent, porous formulation, porous media model

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