Simulations can now be performed where fluid and mass particles can exchange momentum. In particular, particles can induce a flow as they move through the fluid. Momentum conservation between particles and fluid is insured by an algebraic implicitness, so there are no convergence or relaxation limitations. Electric Field Model. An electric field can be computed from the potentials assigned to obstacles, from charged mass particles, and from distributed electric charges in fluids.
Electric forces affect the charged particles and charged fluid in a self-consistent manner.
A frequent problem facing users is one where they would like to be able to specify a mass source having a particular velocity at some point internally in their model. This could represent situations such as purge nozzles and gas leaks. This feature could be used, for example, to simulate an air nozzle sweeping over a surface as a cleaning action. Lost Foam Casting Model. The heat transfer between metal and foam has been improved to account for gravitational stability effects associated with gas-metal interfaces.