[mayursathe]

I am trying to model flow distribution by a porous plate in the pipe. I was basing my case on the angleDuct fvoptions file.
My geometry is a larger cylindrical pipe (0.1 m dia, 0.6 m length; with a small cocentric jet inlet at y=0). the baffle plate should spread the velocity profile and make the flow uniform across the cross section.

I have defined a cell zone using topoSet as follows. the cell zone occupied the full cross section of pipe, and ran from y=0.2 - 0.25.

actions
(
     {
        name    porousBaffle1;
        type    cellSet;
        action  new;
        source   boxToCell;
        sourceInfo
        {
        box (-0.06 0.2 -0.06) (0.06 0.25 0.06);
        }
     }
     {
        name    porousBaffle1;
        type    cellZoneSet;
        action  new;
        source  setToCellZone;
        sourceInfo
        {
        set     porousBaffle1;
        }
     }
);

And I have added an fvOptions file, with the following source term definition:

porosity1
{
    type          explicitPorositySource;
    active        true; //yes;

    explicitPorositySourceCoeffs
    {
        selectionMode cellZone;
cellZone      porousBaffle1;
        type fixedCoeff;

        fixedCoeffCoeffs
        {
              alpha    alpha [0 0 -1 0 0 0 0] (5000 5000 5000); //linear term
              beta     beta [0 -1 0 0 0 0 0] (1000 1000 1000); //squared term
              coordinateSystem
              {
        type cartesian;
        origin (0 0.2 0);
        rho 1.2;
        coordinateRotation
                 {  
            type axesRotation;
            e1    (1 0 0);
            e2    (0 1 0);
                //e3    (0 0 1);
           }
              }
        }
    }
}

As shown in the attached image, the jet moves right through the porous zone. The pressure drop from the porous zone should block it; but looks like the explicitPorositySource is not working at all. I tried reading many forum posts but no mention of using porous zone for bubbly flow.
Can you please help me resolve this?