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。
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.
出处
《机械科学与技术》
CSCD
北大核心
2012年第12期2057-2060,共4页
Mechanical Science and Technology for Aerospace Engineering
基金
国家自然科学基金项目(50876113)资助
