[stardust111]

Dear all,

I want to simulate the droplet behavior on a solid surface with interFoam (OpenFOAM-50). But I met a problem that in my case the wettability of the solid surface is not uniform, which means the contact angle is a function of the coordinate. CA=f(x,y).
I found in OpenFoam there are already static and dynamic contact models. In the dynamic contact angle model, the contact is defined as a function of Uwall. I thought one way to solve this problem might be to change the CA function to make it coordinate dependent. As I am a beginner to OpenFOAM, I don't know how to call the local coordinate information of the wall in the Dynamic contact angle library. Does anyone have suggestions to me how to do it?

Many thanks!

Guang