基于k-ω湍流模型的某云爆弹亚音速下二次引信气动特性研究  

Research on Aerodynamic Characteristics of a Subsonic Secondary Fuze Based on k-ωTurbulence Model

作　　者：车淑琴 马俐康 杜云鹏 孙春霞 童亚光 戴为 CHE Shuqin;MA Likang;DU Yunpeng

机构地区：[1]晋西工业集团有限责任公司,太原030027

出　　处：《科技创新与应用》2023年第27期15-19,共5页Technology Innovation and Application

摘　　要：二次起爆型云爆弹的二次引信需要在气溶胶达到特定浓度时引爆整个云雾团,随即发生爆轰,同时释放出大量热能,产生爆炸冲击波,从而大面积摧毁军事目标,故而二次起爆型云爆弹的关键技术之一是研究二次引信与云雾团的空间-时间匹配关系,尤其需要研究二次引信抛出后的气动特性。为研究某二次引信的气动力特性和静稳定性,该文基于k-ω湍流模型对该二次引信气动特性进行数值仿真计算。仿真计算结果表明,该异形二次引信在0.6~0.8 Ma下阻力系数随着马赫数和攻角的增加而增大,且俯仰通道和偏航通道都是静稳定的。The secondary fuze of the secondary initiation cloud explosive bomb needs to detonate the whole cloud when the aerosol reaches a specific concentration,then detonation occurs,and a large amount of heat energy is released at the same time,resulting in an explosion shock wave,thus destroying the military target in a large area.Therefore,one of the key technologies of the secondary initiation cloud explosive bomb is to study the space-time matching relationship between the secondary fuze and the cloud,especially the aerodynamic characteristics of the secondary fuze.In order to study the aerodynamic characteristics and static stability of a secondary fuze,the aerodynamic characteristics of the secondary fuze are numerically simulated based on the k-ωturbulence model.The simulation results show that the resistance coefficient of the special-shaped secondary fuze increases with the increase of Mach number and angle of attack under 0.6~0.8 Ma,and the pitch channel and yaw channel are statically stable.

关 键 词：湍流模型 云爆弹 二次引信 气动特性 静稳定性 

分 类 号：TJ430[兵器科学与技术—火炮、自动武器与弹药工程]