What is the best way to animate a bin emptying

I am trying to animate a bin emptying from a hole in the bottom and would like to know if anyone has a suggestion how this could be done.

I have tried motion studies and a small number of balls representing the material in the bin and this works well but when I increase the number of balls so that I get a good representation of the material, SW crashes.

I have not tried Flow Simulation as yet.

Essentially I want to start with a know volume of material in a circular bin and over time, discharge this into another vessel.  The animation only needs to be representative of the actual flow for sales purposes.

Thanks,

Jason

SolidworksSimulation