低压沸腾管内汽泡尺寸的测量与研究  

Measurement and study of bubble size in low pressure boiling tube

作　　者：孙奇[1] 杨瑞昌[1] 郗昭[2] 蒋序伦[2] 

机构地区：[1]清华大学热能工程系,北京100084 [2]中国核动力研究设计院空泡物理和自然循环重点实验室,四川成都610041

出　　处：《化学工程》2004年第5期15-18,共4页Chemical Engineering(China)

基　　金：国家自然科学基金资助项目(59995460 1);空泡物理和自然循环重点实验室基金资助

摘　　要：沸腾工况汽液两相流汽泡尺寸的研究对于深入理解两相流动特性以及相关模型的发展具有重要意义。文中采用双探头光学探针对受热上升管内汽液两相流汽泡尺寸的径向分布特性进行了测量与研究。此外,通过对汽泡尺寸概率密度数的分析,得出了对应工况的两相流流型,根据理论分析及实验结果,总结了汽泡尺寸径向分布与流型的关系。Investigation of bubble size in boiling two-phase flow is significant for the further understanding of two-phase flow structure and the development of two-phase models.The radial distribution characteristics of bubble size were studied through the measurement in an upward-heated tube using dual-sensor optical probe. Besides,the flow patterns were identified according to the analyses of probability density function of bubble chord length. The (relationship) between bubble size radial distribution and flow patterns in upward-heated tube was drawn on the basis of theoretical analyses and experimental results.

关 键 词：两相流 汽泡尺寸 流型 概率密度函数 光学探针 

分 类 号：TQ01[化学工程]