Numerical Study on Bubble Rising in Complex Channels Saturated with Liquid Using a Phase-Field Lattice-Boltzmann Method

doi:10.3390/pr8121608

	Numerical Study on Bubble Rising in Complex Channels Saturated with Liquid Using a Phase-Field Lattice-Boltzmann Method
	Yu, Kang 1,2; Yong, Yumei 1; Yang, Chao 1,2,3
刊名	PROCESSES
	2020-12-01
卷号	8 期号:12 页码:26
关键词	packed bed reactor multiphase system phase-field LB model complex channel flow pattern bubble evolution
DOI	10.3390/pr8121608
英文摘要	Packed bed reactors have been widely applied in industrial production, such as for catalytic hydrogenation. Numerical simulations are essential for the design and scale-up of packed beds, especially direct numerical simulation (DNS) methods, such as the lattice-Boltzmann method (LBM), which are the focus of future researches. However, the large density difference between gas and liquid in packed beds often leads to numerical instability near phase interface when using LBM. In this paper, a lattice-Boltzmann (LB) model based on diffuse-interface phase-field is employed to simulate bubble rising in complex channels saturated with liquid, while the numerical problems caused by large liquid-to-gas density ratio are solved. Among them, the channel boundaries are constructed with regularly arranged circles and semicircles, and the bubbles pass through the channels accompanied by deformation, breakup, and coalescence behaviors. The phase-field LB model is found to exhibit good numerical stability and accuracy in handing the problem of the bubbles rising through the high-density liquid. The effects of channel structures, gas-liquid physical properties, and operating conditions on bubble deformation, motion velocity, and drag coefficient are simulated in detail. Moreover, different flow patterns are distinguished according to bubble behavior and are found to be associated with channel structure parameters, gravity Reynolds number (Re-Gr), and Eotvos number (Eo).
资助项目	National Key Research and Development Program[2019YFC1904204] ; National Natural Science Foundation of China[21776283] ; National Natural Science Foundation of China[91934301] ; National Natural Science Foundation of China[21961160745] ; External Cooperation Program of BIC, Chinese Academy of Sciences[122111KYSB20190032] ; DNL Cooperation Fund, CAS[DNL201902]
WOS关键词	INCOMPRESSIBLE 2-PHASE FLOWS ; CONTACT-LINE DYNAMICS ; MULTIPHASE FLOWS ; LARGE DENSITY ; MODEL ; SIMULATION ; EQUATION
WOS研究方向	Engineering
语种	英语
出版者	MDPI
WOS记录号	WOS:000602324000001
资助机构	National Key Research and Development Program ; National Natural Science Foundation of China ; External Cooperation Program of BIC, Chinese Academy of Sciences ; DNL Cooperation Fund, CAS
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/42920]
专题	中国科学院过程工程研究所
通讯作者	Yong, Yumei; Yang, Chao
作者单位	1.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Yu, Kang,Yong, Yumei,Yang, Chao. Numerical Study on Bubble Rising in Complex Channels Saturated with Liquid Using a Phase-Field Lattice-Boltzmann Method[J]. PROCESSES,2020,8(12):26.
APA	Yu, Kang,Yong, Yumei,&Yang, Chao.(2020).Numerical Study on Bubble Rising in Complex Channels Saturated with Liquid Using a Phase-Field Lattice-Boltzmann Method.PROCESSES,8(12),26.
MLA	Yu, Kang,et al."Numerical Study on Bubble Rising in Complex Channels Saturated with Liquid Using a Phase-Field Lattice-Boltzmann Method".PROCESSES 8.12(2020):26.