Embed's small cells with contact angles

[Spencer Schwartz]

Dear all,

I am looking into a simple case of a sessile drop on a flat, embedded plate. I have noticed that I get very different results if the embedded interface cuts the cells so that the fluid volume fraction (cs) is <0.5 versus when cs > 0.5. Particularly, I find that the droplet does not oscillate as much, if at all, when there are small cells.

What is causing this? Is it from the face metric being small that it dampens the contributions of pressure and/or the surface tension force? Or maybe the face velocity interpolation has inaccuracies?

I would greatly appreciate any insight into this problem. I've attached my code, log files, videos, and a graph showing the maximum droplet position vs time.

Thank you,

Spencer

maximum droplet position vs time: