潜射导弹尾部燃气后效建模及数值模拟

The Model of Combustion Gas Bubble of Submarine-launched Missile and Numerical Simulation

利用Rayleigh-Plesset方程,建立了等压球状尾泡模型,分析了尾泡的泡内压力变化.通过尾泡方程与导弹运动方程的联合求解,讨论了燃气泡对垂直发射潜射导弹弹道轨迹的影响.结果表明,导弹在出筒后,由于环境压力的变化,尾部压强有小幅波动,随着尾泡尺寸的减小,波动周期越来越短,与试验测量结果吻合较好.

Rayleigh-Plesset equa and investigate the pressure cha ry of vertical launching submari ble equation and missile motion ment pressure, the tail pressure ter and shorter as the reduction tion was applied to establish the model of combustion gas bubble nge. The effect of combustion gas bubble on underwater trajectone-launched missile was studied by combined solution of gas bub- equation. The result shows that because of the change of environ fluctuates at a small range. The fluctuation period becomes shorof bubble＇s dimension.