Mine countermeasure systems are currently under development to defeat beach- and surf-zone mines by dispensing small darts from a larger primary projectile body (Hydra- 7, MODS, and CMCO). These programs currently lack modeling and simulation techniques that incorporate all of the complexities of the aerodynamics of the dart dispense. OVERFLOW software will be used to perform computational fluid dynamics (CFD) simulations, using overset structured grids (created with OVERGRID), of representative ...