Calculate interface curvature in interFoam
actually I'm solving two phase flows with MRFInterFoam (OF 2.1.1) in a single rotating cylinder, which is half filled with a fluid.
I would like to calculate the resulting capillary pressure, which is connected with the interface curvature. Andrea allready wrote a script for calculating the curvature, but it seems not to work.
Does anybody have a idea?
I've found that, if I add the following code to controlDict, I can extract the curvature to vtk and ascii format for a defined patch. So I can extract the coordinates in x and y.
If cyclic boundaries are involved, isoSurface has to be changed to isoSurfaceCell, but it isn't possible anymore to extract the surface for a defined patch.
But it is still possible to add a contour filter (alpha=0.5) and slice filter to the model in paraView. The coordinates can easily exported as *.csv.
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