Reply To: Multiphase VOF simulation of a rotating capillary tube

[Livio Michele Moesch]

There is reverse flow, which I read is quite common for capillary VOF applications. I specified the phase for the backflow as air in this case, as this is something I would expect in an experimental setup (and as it had to be specified one way or the other). It is worth noting though that I set up simulations at different rotational speeds, keeping everything equal and specifying the backflow phase as water, to make sure that this wasn't the problem.

 

I am moving the wall, it is rotating around the X-Axis.