倾斜下降管内气-液两相流流型PSD特征  

PSD characteristics of gas-liquid two-phase flow pattern in inclined downward tube

作　　者：周云龙[1] 孙斌[1] 李岩[1] 张玲[1] 洪文鹏[1] 

机构地区：[1]东北电力学院动力工程系,吉林吉林132012

出　　处：《热科学与技术》2004年第2期129-132,共4页Journal of Thermal Science and Technology

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。Experimental studies of the flow pattern identification for gas-liquid two-phase flow in a downward inclined tube were presented. 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. By analyzing the PSD, it can also be concluded that the stratified wave flow is another kind of intermittent flows.

关 键 词：倾斜下降管 气液两相流 流型鉴别 流体力学 功率谱密度函数 

分 类 号：O359.1[理学—流体力学]