为研究超声速环境下云爆式子母弹分离过程与多体间的气动干扰,通过耦合求解流动控制方程、刚体动力学方程与运动学方程,对不同分离条件下分离过程进行了数值模拟,并对多体非定常流场特性、分离方案与作动形式对子弹运动过程的影响开展了讨论。结果表明:分离运动初期母弹凹腔内流场对子弹姿态影响显著,通过提高弹间分离初速或采用气囊式分离方案可以有效降低腔内流动的影响,另更早张开弹翼也可有效抑制分离过程中子弹的角运动,使子弹姿态趋于平稳,有助于提高分离安全性。

In order to study the separation process and aerodynamic interference characteristics of the fuel-air-explosive cluster munitions in supersonic flow, a list of different separation conditions of separation process was simulated numerically through coupling solving N-S equations, rigid body dynamic equations and kinematic equations. The influence of multi-body flow field disturbances, separating schemes and actuator have been discussed in detail. The results show that the cavity flow of the dispenser has a significant effect on attitude changes of sub-munition at the start of the separation. The sooner the wings open, the better the sub-munition's angular velocity was suppressed, the separation safety can also be improved.