Synchronous observation of rising soluble bubble through quiescent solution

作     者：Yifu ZHANG Shuai TIAN Weizhong LI Yongchen SONG 

作者机构：Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education Dalian University of Technology Dalian 116024 China 

出 版 物：《中国高等学校学术文摘·能源与动力工程》 (FRONTIERS OF ENERGY AND POWER ENGINEERING IN CHINA)

年 卷 期：2009年第3卷第3期

页      面：307-312页

核心收录：

学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：国家自然科学基金(50476074) NSFC's Key Program Projects(50736001) 

主　　题：soluble bubble mass transfer synchronous observation computer image processing 

摘      要：An experimental method using computer image processing technology (CIPT) was proposed to observe and investigate the velocity, deformation, heat and mass transfer, etc. of a rising soluble gas (CO2) bubble through a quiescent hot water. A model was set up to describe the behavior of the bubble in a visual experi-mental system in which a high-speed camera rose instantaneously with the movement of the bubble. A series of trajectory videos about the bubble were recorded by a computer linked to the camera. The trajectory, volume changes and rate of mass transfer of the bubble were obtained by the CIPT. It is found that the single bubble follows a rolling trajectory at the initial stage when there is mass transfer. With the volume decreasing, the disturbed behavior of the bubble becomes tempered. When the rising velocity of the bubble reaches the maximum, the velocity is nearly at a constant. The experimental and analysis results show that this method is useful for the research on the mass transfer and the movement of rising bubbles in liquid.