Obtain values only at boundary during a run
For my own solver, I need to store only the pressure values at the wall (walls as specified in constant/polyMesh/boundary). This is then used as a source term for dipoles aeroacoustic sources.
I was thinking to store a new volScalarField, with the values for p on the boundary for each time step. The internal field should be zero then.
Is there a simple command to only obtain the boundary values of a volume scalar field, while the internal field should be empty/zero?
Thanks in advance,
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