摘要
对振动状态下水平管内气液两相流流型进行了实验研究,分析了不同振动频率、振动幅度对流型转变的影响。研究发现:随着振动频率或振动幅度的提高,在液相折算速度相同的情况下,环状流的形成需要更高的气相折算速度,而在气相折算流速相同时,泡状流的形成需要更高的液相流量;振动频率或幅度的提高使各个流型的走势分布发生变化,整体看是以弹状-波状流为中心向外有不同程度的扩张;振动频率与振动幅度两者对流型转变的影响基本相同。
Two-phase flow patterns in horizontal tubes under vibration condition were carried out experimentally and the effects of different vibration frequency and vibration amplitude on the flow pattern transition were analyzed. It was found that the increase of the vibration frequency or amplitude leads to a higher gas velocity for the formation of annular flow with the same liquid phase flow rate,and requires a higher liquid velocity to form the bubble flow with the same gas phase flow rate. The trend of each flow pattern distribution changes as vibration frequency or amplitude increases,centered at slug-wavy flow with different degrees of expansion. The influence of the vibration frequency and amplitude on flow pattern transition is essentially the same.
出处
《热能动力工程》
CAS
CSCD
北大核心
2017年第6期17-22,共6页
Journal of Engineering for Thermal Energy and Power
基金
国家自然科学基金资助项目(51541608)
关键词
两相流
振动频率
振动幅度
流型转变
two-phase flow
vibration frequency
vibration amplitude
flow pattern transition
