OpenFOAM_setting a varying parameter with respect to spatial position
 

I appreciate you seeing this thread.

I want to simulate the two-phase flow in a rock fracture using VOF method.
The equations are 2 dimensional, and the aperture of the fracture is the parameter. The aperture distribution is shown as the figure.
The fracture data are available. At a certain position, the value of the aperture can be determined by the data or interpolation.

How to implement this in OpenFOAM ? If there are some similar cases in the OpenFOAM tutorials, I will appreciate it if anyone can tell me about it.

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