倾斜下降管内气-液两相流流型PSD特征  

An Investigation on Flow Pattern Identification for Air-water Two-phase Flow in Downward Inclined Tube

作　　者：关跃波[1] 周云龙[1] 孙斌[1] 洪文鹏[1] 张玲[1] 李岩[1] 

机构地区：[1]东北电力学院动力系,吉林吉林132012

出　　处：《东北电力学院学报》2003年第6期33-35,共3页Journal of Northeast China Institute of Electric Power Engineering

基　　金：吉林省教育厅科研基金(JYT2002025)

摘　　要：气液两相流的流型对其流动和传热特性有很大影响,所以如何确定流型一直是两相流研究 中的重要课题。对倾斜下降管内气液两相流流型的鉴别进行了实验研究。结果发现:利用压差的时域 信号和信号的功率谱密度函数(PSD),可以客观地判别流型。The flow pattern identification for gas-liquid two-phase flow in a downward inclined tub has been studied experimentally. The result shows that the flow patterns of gas-liquid two-phase flow can be objectively identified in accordance with time domain signals of differential pressure and the power spectrum density (PSD) of corresponding signals. At the same time, we can infer that stratified wave flow is another kind of intermittent flows by analyzing its PSD.

关 键 词：倾斜下降管 气-液两相流 流型鉴别 传热特性 时域信号 功率谱密度函数 PSD 

分 类 号：O359.1[理学—流体力学]