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Porous zone input properties

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Old   September 10, 2014, 03:48
Default Porous zone input properties
hashim chaudhry
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Hi all, I am working on fan simulation with extruded duct in order to get fan curve so I created a porous region at the end of duct to introduce some reistance. My model is 3D with cylindrical geometry and flow direction is in -Z direction.

I have pressure drop and velocity values with me. I have calculated '1/alpha' and 'C2' values. But I do not know how to input these values into FLUENT.

what I did I just created a porous zone in which I gave the values of relative velocity resistance formulation (viscous resistance) and inertial resistance in all three direction, for fluid porosity I put the value of 1 considering the flow is fully chocked.

Can anyone help me to input values( viscous and inertial sink terms) in porous zone properly.

It asks for direction vectors. My porous zone is in -Z direction. How to input these values in different directions.

My geometry is cylinderical so should I tick the conical box in the porous zone as well? and should I have to use the porous jump BC at the interior of porous region?

Can anyone help?

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