[KarimIdris]

Hello fellows,

I’m new to openFoam. I have done a 3D simulation for a flow inside a pipe, and now I’m interested in the average of the axial velocity. Is there any post processing tool in OF that calculates the average velocity over the radial surface?

Thanks a lot

[lastjedivol]

Originally Posted by KarimIdris

Hello fellows,

I’m new to openFoam. I have done a 3D simulation for a flow inside a pipe, and now I’m interested in the average of the axial velocity. Is there any post processing tool in OF that calculates the average velocity over the radial surface?

Thanks a lot

Hello and sorry to recover such an old thread, but did you manage to find a solution to your problem?


Thank you

[ingraban]

Hmm, I see... radial surface. Please ignore the following...

I create a cellSet using topoSet:

    {
        name    upstream;
        type    cellZoneSet;
        action  new;
        source  boxToCell;
        box     (-101. -10. -1.)(-100. 10. 10.);
    }

and then I define the output in controlDict

functions
{
    inflow
    {
        type            volFieldValue;
        libs            ("libfieldFunctionObjects.so");
        writeFields     true;
        writeControl    writeTime;
        writeInterval   1;
        regionType      cellZone;
        name            upstream;
        operation       volAverage;
        fields
        (
            U
        );
    }
}