螺杆螺旋通道内气液两相流流动特性研究  

The Characteristics of Air-Water Two-Phase Flow Through Helical Channel in Single Screw Expander Prototype

作　　者：杨光[1] 夏国栋[1] 刘献飞[1] 李云飞[1] 蒋静[1] 

机构地区：[1]北京工业大学环境与能源工程学院强化传热与过程节能教育部重点实验室,北京100124

出　　处：《工程热物理学报》2015年第10期2188-2192,共5页Journal of Engineering Thermophysics

基　　金：北京市自然科技基金(No.3142004);国家重点基础研究发展规划(No.2011CB710704)

摘　　要：本文以水和空气为工质对螺杆螺旋通道内气液两相流流动特性进行研究,采用可视化的方法对螺杆螺旋通道内流型结构进行观察,观察到通道内不同转角位置处的气液两相流型及其特征。根据实验观测结果,绘制了三个转角位置的流型图,并对各流型特征和流型之间的转换界限进行分析,给出了泡状流向间歇流转变、环状流向间歇流转变的准则关系式。In this paper,the air-water two-phase flow characteristics in the screw channel are presented by using high speed flow visualization.The flow pattern and the transition in the different positions of screw channel are illustrated.The transition mechanisms between the different flow patterns have been analyzed.The correlations are proposed to predict the transitions from bubbly flow to intermittent flow and from annular flow to intermittent flow.

关 键 词：螺杆通道 两相流 流型 

分 类 号：O359[理学—流体力学]