Hydrodynamics and mass transfer of oscillating gas-liquid flow in ultrasonic microreactors

doi:10.1002/aic.15091

	Hydrodynamics and mass transfer of oscillating gas-liquid flow in ultrasonic microreactors
	Dong, Zhengya 1,2; Yao, Chaoqun 1,2; Zhang, Yuchao 1,2; Chen, Guangwen 1; Yuan, Quan 1; Xu, Jie 3
刊名	AICHE JOURNAL
	2016-04-01
卷号	62 期号:4 页码:1294-1307
关键词	Ultrasound Microfluidic Taylor Flow Sonochemistry Acoustic Cavitation
ISSN号	0001-1541
DOI	10.1002/aic.15091
文献子类	Article
英文摘要	Ultrasonic microreactors were used to intensify gas-liquid mass-transfer process and study the intensification mechanism. Fierce surface wave oscillation with different modes was excited on the bubble. It was found that for slug bubbles confined in smaller microchannel, surface wave oscillations require more ultrasound energy to excite due to the confinement effect. Cavitation microstreaming with two toroidal vortices was observed near the oscillating bubble by a streak photography experiment. Surface wave oscillation at the gas-liquid interface increases the specific surface area, while cavitation microstreaming accelerates the interface renewal and thus improves the individual mass-transfer coefficient. With these two reasons, the overall mass-transfer coefficient was enhanced by 3-20 times under ultrasonication. As for gas-liquid flow hydrodynamics, ultrasound oscillation disturbs the bubble formation process and changes the initial bubble length and pressure drop. (c) 2015 American Institute of Chemical Engineers AIChE J, 62: 1294-1307, 2016
WOS关键词	SLUG FLOW ; PRESSURE-DROP ; TAYLOR FLOW ; RECTANGULAR MICROCHANNEL ; TRANSFER COEFFICIENTS ; MICROFLUIDIC DEVICES ; SEGMENTED FLOW ; LONG BUBBLES ; CAVITATION ; REACTORS
WOS研究方向	Engineering
语种	英语
出版者	WILEY-BLACKWELL
WOS记录号	WOS:000372912500029
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/170662]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
通讯作者	Chen, Guangwen
作者单位	1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Shaanxi Normal Univ, Appl Acoust Inst, Xian 710062, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Dong, Zhengya,Yao, Chaoqun,Zhang, Yuchao,et al. Hydrodynamics and mass transfer of oscillating gas-liquid flow in ultrasonic microreactors[J]. AICHE JOURNAL,2016,62(4):1294-1307.
APA	Dong, Zhengya,Yao, Chaoqun,Zhang, Yuchao,Chen, Guangwen,Yuan, Quan,&Xu, Jie.(2016).Hydrodynamics and mass transfer of oscillating gas-liquid flow in ultrasonic microreactors.AICHE JOURNAL,62(4),1294-1307.
MLA	Dong, Zhengya,et al."Hydrodynamics and mass transfer of oscillating gas-liquid flow in ultrasonic microreactors".AICHE JOURNAL 62.4(2016):1294-1307.