强流电子束引出窗风冷数值模拟  

Numerical simulation of wind-cooling electron beam extraction window

作　　者：何小海[1,2] 林理彬[1] 肖德鑫[2] 

机构地区：[1]四川大学物理科学与技术学院,成都610064 [2]中国工程物理研究院环保工程研究中心,四川绵阳621900

出　　处：《强激光与粒子束》2009年第3期439-442,共4页High Power Laser and Particle Beams

摘　　要：研究了1.2MW大功率电子加速器引出窗钛膜受力状况,确定其工作温度必须控制在150℃以内。此温度下,热传导和热辐射的散热作用可以忽略,强迫风冷是唯一的散热途径。用流体模拟计算软件分析了钛膜冷却效果与出口风速和距离之间的关系,分析回流区的存在及其影响,并对引出窗结构做了初步优化。模拟了附加隔离窗形成的封闭空间对引出窗风冷的影响,模拟结果为:提出的非均布扫描方式可以将引出窗输出能力提升76%。The situation of titanium foil of high power electron accelerator （1.2 MW）extraction window was studied, because the operating temperature of titanium foil should be controlled within 150℃, forced air-cooling is the only way to disperse the heat （under such temperature, the effects of heat dispersion of heat radiation and conduction can be neglected）. With the fluid analog software （Fluent）, the relationships among cooling efficiency of titanium foil, initial air velocity and distance, existence of refluent zone and its affects were analysed, also the structure of extraction window was primarily optimized. Additionally, simulation analysis was made on the closed space formed by additional protective window. Non-homogenous-distribution scanning has been proved that the output capacity of extraction window can be increased by 76%.

关 键 词：引出窗 附壁射流 强迫风冷 热传导 热辐射 

分 类 号：TM832[电气工程—高电压与绝缘技术]