[minger]

As the topic says I have a highly unsteady solution which I'd like to find the "time-averaged" wall shear stress for.

Ideally I would simply add wall shear stress to the runtime averaging, ala:

    fieldAverage1
    {
        type            fieldAverage;
        functionObjectLibs ( "libfieldFunctionObjects.so" );
        enabled         true;
        outputControl   outputTime;

        fields
        (
            U
            {
                mean        on;
                prime2Mean  on;
                base        time;
            }

            p
            {
                mean        on;
                prime2Mean  on;
                base        time;
            }
        wallShearStress
        {
        mean        on;
        prime2Mean  on;
        base        time;
        }
        );
    }

But that doesn't seem to be helping. Is there any trick for this that doesn't involve writing a data file every time step and averaging by hand/script?

edit: Wow I feel dumb. ParaView filter Temporal Statistics can achieve this. . .Run wallShearStress and then just average it. This does however require that I basically output many time steps and average. It would be nice to be able to treat wallShearStress like a velocity or pressure and allow the code to average and just end with one single result.