时序抛撒子母弹多体干扰气动特性的数值模拟

为研究时序抛撒时子母弹多体干扰气动特性,以时序抛撒子母弹的2种抛撒时序特定分离状态为模型,将分区技术用于混合网格生成法,生成计算网格,利用AUSM+格式求解采用k-ωSST湍流模型的雷诺平均N-S方程,模拟结果与实验结果对比表明,该方法可较细致地模拟时序抛撒子母弹干扰流场结构,获得干扰气动参数.分析表明,抛撒时序是影响时序抛撒子母弹干扰气动参数的重要因素之一,只有选择合适的抛撒时序,才能改善散布面积、提高毁伤效能.研究结果可为进一步研究子母弹时序抛撒干扰气动特性的数值模拟提供参考.

Numerical Simulation of Multi-body Interference Aerodynamic Performance of Cluster Munition Dispensed by Sequential

To study the multi-body interference characteristics of Cluster Munition(CM) dispensed by sequential,two kinds of model were founded by selecting two typical dispersing states of CM under different dispersing scheduling,and calculation grids were generated by partition and hybrid grids technology.The Reynolds-averaged Navier-Stokes equations of k-ω SST turbulence model were solved by scheme AUSM+.The computational solutions are well consistent with the experimental results,so the interference flow characteristics can be simulated satisfactorily by this method.Interference aerodynamic parameters were obtained.The results show that dispensing sequential is one of the important factors affecting the interference aerodynamic parameters of CM dispensed by sequential.Dispersion area and damage efficiency are improved by appropriate dispensing sequential.The results offer reference for further study on the interference aerodynamic performance of CM dispensed by sequential.