I'm quite new to OpenFOAM and I recently managed to implement some experimental fv-schemes and methods in OpenFOAM 1.6.
Now I want to set up a simple reciprocating pump case for compressibleInterDyMFoam:
A simple geometry and simple boundary conditions are already set up and do work very well. To describe the piston's motion I set the BCs of the appropriate patch in the files (cell|point)motionUx to a fixedValue. This works fine. But I need some more sophisticated BCs like sin(t). There's the "calculated" key-word. But how do I have to use it? How can I specify my own functions. Do I have to do some settings in dictionaries? Or must I implement my own wallFuntions in C++?
Many thanks in advance!
With kind regards!
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