Development process of muzzle flows including a gun-launched missile

作者：Zhuo Changfei; Feng Feng^*; Wu Xiaosong

来源：Chinese Journal of Aeronautics, 2015, 28(2): 385-393.

DOI：10.1016/j.cja.2015.02.001

• Blast flow field
• Chemical reaction
• Computational fluid dynamics
• Dynamic overlapped grids
• Gun-launched missile
• Muzzle flows

Numerical investigations on the launch process of a gun-launched missile from the muzzle of a cannon to the free-flight stage have been performed in this paper. The dynamic overlapped grids approach are applied to dealing with the problems of a moving gun-launched missile. The high-resolution upwind scheme (AUSMPW+) and the detailed reaction kinetics model are adopted to solve the chemical non-equilibrium Euler equations for dynamic grids. The development process and flow field structure of muzzle flows including a gun-launched missile are discussed in detail. This present numerical study confirms that complicated transient phenomena exist in the shortly launching stages when the gun-launched missile moves from the muzzle of a cannon to the free-flight stage. The propellant gas flows, the initial environmental ambient air flows and the moving missile mutually couple and interact. A complete structure of flow field is formed at the launching stages, including the blast wave, base shock, reflected shock, incident shock, shear layer, primary vortex ring and triple point.

• 出版日期2015-4
• 单位南京理工大学