[Friendly]

Hello foamers,


I want to obtain the velocity gradient during computation. I do it this way in the controlDict:

functions
{
    libs ("libfieldFunctionObjects.so");


    Ma
    {
        type            MachNo;
        executeControl  writeTime;
        writeControl    writeTime;
    }
    
    gradU
    {
        type            grad;
        field           U;

        executeControl  timeStep;
        writeControl    timeStep;
 
    }
    

 }

My problem is, that I get grad(U) only at the first timeStep for some reason. Obtaining Ma works perfectly fine. It works perfectly fine with mag. I also tried the same with p. The result is the same, mag works, but grad only for the first timestep.


I hope somebody can help!




Regards,
Friendly