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对超声速飞行弹体级间分离过程中的流场开展了数值模拟研究,得到了两级弹体在不同分离状态下的气动特性.计算中采用分区多块网格技术,并对计算所得的气动力结果进行摩擦阻力修正.根据计算结果,分析了主级通气和非通气两种状态下的流场结构和气动力变化特性;研究了弹体气动力随马赫数的变化规律.
The numerical simulation of the flow field during the interstage flight of the supersonic flying projectile was carried out and the aerodynamic characteristics of the two-stage projectile under different separation conditions were obtained. The multi-block gridding technique was adopted in the calculation and the calculated gas And the frictional force is corrected.According to the calculation results, the flow field structure and aerodynamic characteristics under both primary and non-aerated conditions are analyzed, and the change law of aerodynamic force with Mach number is studied.