文献类型：期刊文献

中文题名：CO_(2)气泡上升过程及其影响机制研究

英文题名：Research on the Rising Process of CO_(2) Bubble and Its Influencing Mechanism

作者：裴东号[1];阮锦程[1];李飞[1];曹军[1]

机构：[1]华东理工大学机械与动力工程学院,上海200237

年份：2023

卷号：39

期号：4

起止页码：799

中文期刊名：石油学报（石油加工）

外文期刊名：Acta Petrolei Sinica(Petroleum Processing Section)

收录：CSTPCD;;EI(收录号：20233914773957);Scopus;北大核心:【北大核心2020】；CSCD:【CSCD_E2023_2024】；

基金：上海市自然科学基金项目(20ZR1413200);中国石油化工股份有限公司重大(重点)科技开发项目(320131-3)资助。

语种：中文

中文关键词：CO_(2)气泡;运动特性;终速度

外文关键词：CO_(2)bubble;motion characteristic;terminal velocity

摘要：针对CO_(2)气泡在纯水中的上升过程,通过高速摄像机捕捉气泡上升时的瞬时图片;通过调节蠕动泵的转速以及选用不同直径的不锈钢管从而获得不同尺寸的CO_(2)气泡;利用Matlab数字图像处理技术提取所产生气泡的直径以及质心位置,得出了不同等效直径下气泡的运动轨迹、瞬时纵横比以及瞬时速度变化。研究结果表明,气泡的瞬时横向速度、瞬时纵横比、横向振幅呈周期性变化,与直径大小无关;其横向振幅与横向速率振幅成正比,并且小直径气泡的瞬时横向速度振荡周期是瞬时纵横比和瞬时纵向速度振荡周期的2倍。针对气泡上升时终速度变化,通过对比不同学者的预测关系式,提出了一个更为精确的终速度预测式。
Instantaneous pictures of CO_(2) rising bubbles in pure water were captured with a high speed camera.Different sizes of CO_(2) bubbles were obtained by adjusting the speed of the peristaltic pump and using stainless steel tubes of different diameters;Matlab digital image processing technology was used to extract the diameter and centroid position of the bubbles,and calculate the bubble trajectories,instantaneous aspect ratio and instantaneous velocity change under different equivalent diameters.The results show that the instantaneous transverse velocity,instantaneous aspect ratio and transverse amplitude of the bubbles change periodically,regardless of the diameter size.The transverse amplitude is proportional to the transverse velocity amplitude,and the instantaneous transverse velocity oscillation period of the small diameter bubbles is twice the instantaneous aspect ratio and the instantaneous longitudinal velocity oscillation period.For the terminal velocity change,a more accurate terminal velocity prediction formula was proposed by comparing prediction relations from different scholars.