An Investigation of Bubble Motion in the Fluidic Oscillator  

作　　者：BIE Haiyan XUE Licheng LI Yulong LI Yunxia LIN Zixin AN Weizhong 

机构地区：[1]College of Chemistry and Chemical Engineering,Ocean University of China,Qingdao 266100,China

出　　处：《Journal of Ocean University of China》2023年第2期459-468,共10页中国海洋大学学报（英文版）

基　　金：This work was supported by the National Natural Science Foundation of China(No.22178329);the Taishan Scholars Program,the Shandong Provincial Natural Science Foundation(Nos.ZR2020ME175,ZR2020QE192);the Fundamental Research Funds for the Central Universities(No.202165002).

摘　　要：Enhanced gas-liquid mass transfer is significant for the desulfurization and denitration of ship exhaust gases.As a fluid device,the special structure of the fluidic oscillator generates self-excited oscillations that can effectively enhance the mass transfer process of gas-liquid.But there are few studies on the internal gas-liquid flow.The transportation of individual bubbles in the fluidic oscillator was investigated by a high-speed camera and digital image analysis.The results show that the bubble experienced a significant deceleration process in the chamber region of the fluidic oscillator.In addition,the maximum bubble offset increased with the diameter of the initial bubble.The trajectory of the bubble showed zigzag movement due to the deflecting oscillation of the fluidic oscillator.At the same time,the deformation of the bubble was intensified by the deflecting oscillation.The deformation ratio of the bubble increased with the increase of Reynolds number.By studying the transport process of a single bubble in the fluid oscillator,it is considered that the fluid oscillator has the potential to be a new bubble generator.

关 键 词：fluidic oscillator BUBBLE DECELERATION deformation ratio 

分 类 号：X736.3[环境科学与工程—环境工程] U664.9[交通运输工程—船舶及航道工程]