关键词: 导弹, 高超声速, 耦合, 大长细比, 数值模拟

Abstract:

An aerodynamic/thermal/structural multi-field coupling analysis is implemented using the partition algorithm in order to predict the aerodynamic and aerothermal environment accurately, and this coupling method is validated by comparing with the experiments. A slender hypersonic missile model is established and its structural deformation, temperature and pressure are numerically simulated. The results show that the structure is stretched longitudinally and bent laterally with the increment in attack angle; the stretching deformation is mainly caused by the thermal factor and the bending deformation is primarily caused by the aerodynamic factor; the aerodynamic and aerothermal environments are more harsh in the missile head; the coupling factors become obvious at large attack angle and aggravate the aerodynamic heating and aerodynamic environment.

Key words: Missile, Hypersonic, Coupling, Slender, Numerical simulation