应用伽马射线对垂直上升管内环状流液膜及扰动波特性研究  

Study of the Characteristics of an Annular Flow Liquid Film and Disturbance Waves in a Vertical Riser by Using Gamma Rays

作　　者：赵于[1] 毕勤成[1] 吕海财[1] 胡日查[1] 

机构地区：[1]西安交通大学动力工程多相流国家重点实验室,陕西西安710049

出　　处：《热能动力工程》2014年第1期53-57,108,共5页Journal of Engineering for Thermal Energy and Power

基　　金：国家重点基础研究发展计划(973计划)基金资助项目(2009CB219805)

摘　　要：采用单束伽马射线与高速摄像相结合的方法,利用无干扰动态测量技术对垂直上升管内环状流液膜及扰动波进行了系统性的研究,研究结果表明,在液相折算流速不变时,随着气相折算流速的增高,管壁液膜厚度逐渐减小。当扰动波在管中剧烈变化时,射线计数率较低,反映出液相成分较多,结合环状流扰动波的特性,还研究得出了在流体温度变化范围较小时,温度的改变对计数率影响不大的结论。By using a single beam gamma ray in combination with the high speed video camera shooting,the non-interference dynamic measurement technology was used to conduct a systematic study of an annular flow liquid film and disturbance waves in a vertical riser. The research results show that when the superficial velocity of the liquid phase is kept constant,the liquid film thickness on the tube wall will gradually decrease with a rise of the superficial flow velocity of the gas-phase. When the disturbance waves change drastically inside the riser,the count rate of the ray will be relatively low,reflecting that the liquid phase component is relatively big. In combination with the disturbance wave characteristics of the annular flow,the authors have also studied and concluded that when the range of the temperature of the fluid is relatively small,any change of the temperature has little influence on the count rate.

关 键 词：伽马射线 环状流 液膜 扰动波 垂直上升管 

分 类 号：TK124[动力工程及工程热物理—工程热物理]