Integrate the unified PhysX technology called FLEX into 3ds Max and Particle Flow in order to simulate different types of physics in the same system, here are some examples.
•Liquids (water, goo)
•Granular materials (sand, dirt)
•Environmental cloth (flags, newspapers)
•Rigid bodies (environmental debris)
•Soft bodies (inflatables / tetrahedral meshes)
Check out this live demonstration and don't miss the WATER BALLOONS at 2:45! 🙂
http://www.youtube.com/watch?v=rF1_Lo3Z3G4
Here is some more info from PhysXinfo.com
http://physxinfo.com/news/11860/introducing-nvidia-flex-unified-gpu-physx-solver/