中国石油大学学报（自然科学版）2017，Vol.41Issue(5)：146-152,7.DOI:10.3969/j.issn.1673-5005.2017.05.018
上倾管道充气排液过程两相流动特性
Gas-liquid flow characteristics in evacuation process for ascending pipelines
摘要
Abstract
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-liq-uid 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 di-vided 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 increas-ing 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.关键词
上倾管道/充气排液/段塞流/气液两相流/Taylor气泡Key words
ascending pipeline/liquid evacuation/slug flow/gas-liquid two phase flow/Taylor bubble分类
信息技术与安全科学引用本文复制引用
郭芮,张伟明,姜俊泽,李江,张源涛..上倾管道充气排液过程两相流动特性[J].中国石油大学学报（自然科学版）,2017,41(5):146-152,7.基金项目
后勤工程学院研究生创新基金项目 (20151230) （20151230）
重庆市博士后特别资助项目(xm2016026) （xm2016026）
