Simulation Study on the Structure of Barrel in Pulsed Anti-riots Water Cannon
-
摘要: 应用质量守恒定律和动量守恒定律,利用大涡模拟方法并运用Fluent流体仿真软件对锥形炮管内流和近喷嘴区域的射流发展情况进行了数值模拟研究。结果表明:在考虑了炮管和喷嘴的结构参数的情况下,采用气液两相大涡模拟能够获得与实验非常接近的射流结构;锥形炮管能够显著增加初始射流的速度、降低速度梯度以及提高射流稳定性,从而对提高脉冲防暴水炮性能产生了积极的作用。Abstract: Based on the conservation of mass and momentum,software Fluent and large eddy simulation(LES) was applied to study the development of jet flow in the tapered barrel and near the nozzle.The result shows that in consideration of the structure of barrel and nozzle,we can get similar structure between simulation and experiment by gas-liquid two-phase LES method;the tapered barrel can add the velocity of the jet flow,decrease the velocity gradient and improve the jet flow stability.So it can improve the performance of pulsed anti-riots water cannon apparently.
-
Key words:
- pulsed water cannon /
- tapered barrel /
- Fluent /
- large eddy simulation
-
[1] 余熙,卫宏远. 应用大涡模拟对水平管道进行大涡模拟[C].2005:562-569 [2] 汪送,战任军. 脉冲防暴水炮发射管内的建模与二维仿真[J].空军工程大学学报（自然科学版）,2009,(4):37-41 [3] Mcilwain S,Pollard A. Large eddy Simulation of the effects ofmild swirl on the near field of a round free jet[J].Physics of Fluids,2001,14(2):653-661 [4] Tian M. A Numerical Simulation of Internal Two-Phase Flowfor Aerated-Liquid Injectors[D].A thesis submitted to the Graduate Faculty of Norlh Carolina Slate University,2002 [5] 赵法栋. 脉冲防暴水炮雾化特性数值模拟及实验研究[D].武警工程大学,2011. -
点击查看大图
计量
- 文章访问数: 194
- HTML全文浏览量: 25
- PDF下载量: 2
- 被引次数: 0
下载:
