I am undertaking a project to simulate the sloshing inside free surface roll stabilisation tanks. Is there anyone who has experience of modelling free surface flows inside tanks using Fluent. I am particularly interested in how to model a moving boundary. Also of interest is how to model the flow through a baffle, or past a flap, as these are going to be possible solutions to altering the stabilisation qualities of the tank in question. If anyone can offer any advise I would be most greatful.

Ben

Have you looked at the spinning bowl tutorial? It contains information on moving walls and free surface conditions, its a 2d axisymmetric model but it might help get you started