脉冲防暴水炮近流场的数值模拟  

Near-field Numerical Simulation of Impulse Anti-riots Water Cannon

作　　者：赵法栋[1] 庄弘炜[1] 战仁军[1] 薛峰[2] 

机构地区：[1]武警工程学院装备运输系,西安710086 [2]西安交通大学能源与动力工程学院,西安710049

出　　处：《计算机工程》2011年第15期274-275,282,共3页Computer Engineering

基　　金：国家自然科学基金资助项目(50876113)

摘　　要：为研究脉冲防暴水炮非稳态气液两相射流的雾化机理,采用一方程大涡模拟耦合有界压缩型VOF方法构建数值计算模型,对近流场进行数值模拟。从喷雾形态看,由数值模拟得到的气液两相界面分布图与近流场的高速摄影图像相符程度较高。对两者进行分析比较后发现,在近流场中高压气体膨胀为射流发展的主要动因。One-equation Large Eddy Simulation（LES） model coupled with the bounded and compressed Volume of Fluid（VOF） method is used to simulate the near-field of impulse anti-riots water cannon for studying atomization mechanism of the non-steady jet. The instantaneous isosurfaces of liquid-phase volume fraction and the high-speed photographs are agreed with each other very well in the spray configuration. Through the comparison, the inflation of the high-pressure gas is considered to be the most dominant factor in the near-field.

关 键 词：脉冲防暴水炮 大涡模拟 有界压缩型VOF 数值模拟 非稳态 

分 类 号：O358[理学—流体力学]