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针对马赫数Ma>3飞行状态下的内埋物安全投放难题,提出了两种适用于非平坦舱体外形的超声速内埋物投放分离过程的流动控制方法:第一种方法采用了圆棒扰流器,第二种方法采用气帘喷流。为了验证两种不同流动控制方法的效果,引入结构嵌套六自由度动态网格技术和基于k-ω湍流模型的Navier-Stokes方程计算,对包括重力投放、弹射投放、采用圆棒扰流器的重力投放和采用气帘的重力投放等4种不同的投放分离状态进行了动态全过程的计算对比分析。通过对仿真计算结果分析发现,当来流马赫数Ma∞>3时,采用流动控制的投放物分离运动特性产生了明显的变化。由投放物下落过程中的俯仰偏航特性可以得出:采用圆棒流动控制有利于安全分离;气帘流动控制具有应用潜力,但采用这种方法需要针对特定的投放条件进行优化,否则可能诱发投放物在俯仰方向的姿态发散。
In order to solve the problem of safe placement of buried objects under Ma> 3 flight condition, two flow control methods are proposed for the placement and separation of supersonic embedded implants in non-flat cabin shape. The first method uses round bar interference Flow, the second method using air curtain jet. In order to verify the effect of two different flow control methods, a six-degree-of-freedom dynamic nested grid structure design and a Navier-Stokes equation based on the k-ω turbulence model are introduced. The effects of gravity loading, The gravity of the air curtain and the use of gravity, such as the release of four different delivery status of the dynamic calculation of the whole process of comparative analysis. Through the analysis of the simulation results, it is found that when the Maher number of inflow Ma ∞> 3, the movement characteristics of the delivered goods with flow control have obvious changes. From the yaw characteristics of the drop during dropping, it can be concluded that the round bar flow control is conducive to safety separation; the flow control of the curtain air curtain has potential application, but this method needs to be optimized for specific delivery conditions, otherwise it may trigger delivery The attitude of the object diverges in the pitch direction.