西南交通大学学报2013，Vol.48Issue(2)：223-229,7.DOI:10.3969/j.issn.0258-2724.2013.02.006
微通道气液柱塞流头部流场三维实验研究
Experimental Investigations of Three-Dimensional Flow Field around the Head of Gas-Liquid Slug Flow in Microchannels
摘要
Abstract
The three-dimensional micro-particle image velocimetry (PIV) technique was used for experimentally studying three-dimensional flow field properties of slug flow in microchannels.By processing images of slug flow,three-dimensional fluorescent particles distribution and velocity flow field of the liquid around the head of slug bubble was obtained.The results show that there was two symmetrical and reverse vortices near the head of the bubble.The fluid near the bubble head had a larger velocity and flowed along the bubble surface.In the flow field far away from the bubble,the distribution of liquid velocity was parabolic in the radial direction,which was similar to a single-phase pressure driven flow.The fluid between the bubble surface and the microchannel walls had a complex motion:it might be pushed to the bubble tip if closer to the bubble surface or might be passed if closer to the walls.In addition,the gas-liquid interface was approximately rigid.关键词
微通道/柱塞流/三维流场/Micro-PIVKey words
microchannel/slug flow/3D flow field/Micro-PIV分类
数理科学引用本文复制引用
王凌,罗锐,王补宣..微通道气液柱塞流头部流场三维实验研究[J].西南交通大学学报,2013,48(2):223-229,7.基金项目
国家自然科学基金资助项目(50736002) （50736002）
