圆锥形炮管下喷嘴的优化设计  

Optimization Design of Nozzle in Tapered Barrel

作　　者：李永利[1,2] 战仁军[2] 

机构地区：[1]空军工程大学航空航天工程学院,西安710051 [2]武警工程大学装备工程学院,西安710086

出　　处：《火力与指挥控制》2013年第5期117-120,共4页Fire Control & Command Control

基　　金：国家自然科学基金资助项目(50876113)

摘　　要：合理选择喷嘴形式和优化结构参数可以有效改善射流,从而提高脉冲防暴水炮的技战术性能。应用流体仿真软件Fluent并结合高速摄影技术,对圆锥形炮管的喷嘴进行了理论研究及优化设计。研究结果表明:圆柱形喷嘴能够提高射流的轴向速度矢量比,但当其长度过长时反而会因增大摩擦而降低射流速度;外张型喷嘴能够在显著提高射流集中度的同时降低射流表面的初始扰动,并能保持一定的雾化角,因此,能够提高脉冲防暴水炮的射程和雾化效果。The jet flow can be improved by choosing reasonable nozzle and optimizing structure parameter, so the technical and tactical performance of pulsed anti-riots water cannon can be improved at the same time. By using software Fluent and high-speed video techniques,make theoretical studies optimization design of nozzle in tapered barrel. It is proved that： columniform nozzle can increase the axial components of velocity,but when the length of nozzle is too big the velocity of the jet flow will be reduced because of friction. Divergent nozzle can improve the concentration ratio of jet flow and reduce the initial disturbance at the same time,the spray angle is stable. So it can increase the cannon-shot and improve the atmospheric effects of pulsed anti-riots water cannon.

关 键 词：圆锥型炮管 喷嘴 优化设计 

分 类 号：TV131[水利工程—水力学及河流动力学]