摘要
石英灯辐射加热可以作为托卡马克真空室的烘烤系统,为真空室提供高质量真空环境。由于石英灯的分布不同导致真空室表面不同区域获得的热流密度与要求施加的热载荷有所差异,这样可能会导致“过热”或“欠热”现象出现,从而使得温度均匀性下降,增加了结构设计的风险。本文基于离散坐标方法,采用Fluent辐射模型对石英灯加热真空室进行了模拟仿真,为合理优化灯的分布、提高真空室烘烤质量提供理论参考。
Quartz radiation heater can be used as the baking system of Tokamak vacuum vessels,which can realize high quality vacuum.Different distribution of quartz heaters can cause the difference between the heating flux density and the required thermal condition on vacuum vessel surface,therefore leads to“over-heating”or“under-heating”areas,which decreases the temperature uniformity and increases the risk of structural design.Based on discrete-coordinate method,the quartz lamp heating vacuum chamber is simulated by using Fluent radiation model,which provides a theoretical reference for optimizing the lamp array distribution and improving the baking quality of vacuum chambers.
作者
章恒
胡戎兴
余清洲
李斌
干蜀毅
ZHANG Heng;HU Rong-xing;YU Qing-zhou;Li Bin;GAN Shu-yi(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《真空电子技术》
2022年第3期80-84,91,共6页
Vacuum Electronics
关键词
石英灯辐射加热
真空室烘烤
离散坐标法
温度分布
灯阵布置
Quartz radiation heating system
Vacuum chamber baking
Discrete-coordinate method
Temperature distribution
Lamp array layout
