I want to do a volume average
I want to do a volume average of volScalarField and from this scalar I want to calc the time devirative.
I have tried:
scalar dpmdt = ddt(p.weightedAverage(mesh.V()).value());
but the ddt function does not allow a scalar argument.
How can I do this?
Basically, by hand: store seve
Basically, by hand: store several scalars and calculate the ddt directly from their values. A scalar variable is just a float (or a double) and it does not record its own history.
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