水下发射燃气射流特性及弹道影响研究综述  

Review of gas jet flow features and its ballistic influences of underwater launch

作　　者：崔祚 薛牧遥 尹超 Cui Zuo;Xue MuYao;Yin Chao(School of Aerospace Engineering,Guizhou Institute of Technology,Guizhou 550003,China;Shanghai Space Propulsion Technology Research Institute,Shanghai 201109,China)

机构地区：[1]贵州理工学院航空航天工程学院,贵州550003 [2]上海新力动力设备研究所,上海201109

出　　处：《战术导弹技术》2024年第3期1-10,63,共11页Tactical Missile Technology

基　　金：国家自然科学基金(12002097,12262006);贵州理工学院高层次人才项目(XJGC20190956)。

摘　　要：水下发射技术是实现深水武器系统高速机动的关键技术。由于深水环境流体密度大、背压高,水下发射尾气射流膨胀过程受到流体阻力,形成高温、高动压、气液多相混流等复杂流动现象。从水下超声速燃气射流不稳定性、过膨胀喷管流动分离、高温燃气与水传热相变、燃气射流与空泡流场耦合等方面,重点阐述水下发射复杂瞬态尾喷射流过程,并从推力稳定性和深水点火两方面论述射流特性对水中弹道的影响,展望了水下发射技术的发展趋势,旨在为水下发射技术的工程应用提供理论参考。The underwater launching technology is the key factor to realize the high-speed maneuver of deep-water weapon system.Because of the high density and high back pressure of the fluid environment in the deep ocean,the expansion process of tail gas jet is subjected to the fluid resistance,which results to the complex flow phenomenon with high temperature,high dynamic pressure and gas-liquid multiphase flow.The transient flow characteristics of underwater launch are focused,and the launching process from several aspects is reviewed,including the instability of the supersonic jet,the flow separation of the over-expanded nozzle,the phase change and heat transfer between high temperature gas and water,and the coupling influences of the gas jet and cavitating flow,etc.Moreover,the effects of gas jet flow on the underwater launching trajectory are discussed from the deep-water ignition and thrust stability,etc.Finally,the development trend of underwater launch technology is also demonstrated.Overall,the goal of the above analyses is to provide theoretical references for the engineering applications of underwater launching technology.

关 键 词：水下发射 高速射流 界面不稳定性 多相流动 相变 水下点火 弹道特性 

分 类 号：TJ762.4[兵器科学与技术—武器系统与运用工程]