Possible for sure, but it will take quite some work
So I was thinking some more on this, and recalled one abandoned porn game did this (faked liquid simulation). It looked like a liquid and flowed like a liquid, but it was a static animation and would play every time the same way. That was the old FapLife game by Likkezg. They ran into development issues and eventually gave up on it as far as I can tell. I think they have it on their main site, but otherwise a place like F95Zone would have it.