Solid-Solid Interaction / Collision in Sloshing Simulations
 

I am trying to model sloshing problem. The problem : I want to drop big 6 rubber spheres(r=5cm) into 6mx6mx6m cubic box. The cubic box has fully fueled. As you know, while driving, fuel and rubber spheres are sloshing in the cubic box. I wonder, can we model solid-solid interaction/collision in sloshing problems ? I know if fluid hit the wall while driving, we can compute pressure and force on the wall but I want to know if one spheres hit the another spheres while driving, can I model this situation ? Maybe with uDF ?

Best regards