%0 Journal Article
%T 上倾管道充气排液过程两相流动特性
%A 郭芮
%A 张伟明
%A 姜俊泽
%A 李江
%A 张源涛
%J 中国石油大学学报(自然科学版)
%D 2017
%R 10.3969/j.issn.1673-5005.2017.05.018
%X 在直径为40 mm、倾斜角为20°的管道内,以空气、水为试验介质,利用高速摄影仪和数据采集仪对上倾管道充气排液过程气液两相流动特性进行研究。建立跟随气泡和领先气泡速度比与气泡距离的关系,对比不同入口气体流速下管道内部压力、流量、气泡变化特性。结果表明,充气排液过程分为4个阶段,气体侵入和气液喷发阶段是气液混合物产生阶段,此阶段上倾管内流型以段塞流为主。管道底部压力和出口流量随气体流速的增大而增大,排空时间随气体流速的增大而减小。气体侵入过程气泡呈合并趋势,入口气速越大气泡越长,形状越不规则,领先气泡的速度和液体速度呈线性关系。Hout公式与本文中拟合公式最为接近。</br>An experiment investigation was conducted in a pipeline with the radius 40 mm and the ascending angle 20°, where the gas and water are used as the mediums. The high speed camera and data collector are utilized to study the gas-liquid two phase flow characteristics in the liquid draining process. The function of the velocity ratio between the leading bubble and following bubble, with respect to the bubble distance was established. Then the internal pressure, the flow and bubble variation characteristics were compared for different inlet velocities. The results show that the liquid evacuation process is divided into four stages, where the gas invasion and gas-liquid eruption stage deals with the production of the mixture of gas and liquid, and the slug flow is the main flow type in the ascending pipeline. The bottom pressure and outlet flow rate increase, while the draining time decreases with the increase of the inlet velocity. The leading bubble takes on a merging and increasing tendency. The bubble becomes longer and less regular with the increase of the inlet velocity. The velocity of the leading bubble is linearly related with the outlet velocity. Also it is found that the Hout formula is close to the fitted one in the current work
%K 上倾管道 充气排液 段塞流 气液两相流 Taylor气泡&lt
%K /br&gt
%K ascending pipeline liquid evacuation slug flow gas-liquid two phase flow Taylor bubble
%U http://zkjournal.upc.edu.cn/zgsydxxb/ch/reader/view_abstract.aspx?file_no=20170518&flag=1