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

文献类型：期刊论文

作者Yu, Kang2,3; Yong, Yumei3; Yang, Chao1,2,3
刊名PROCESSES
出版日期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
DOI10.3390/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).
WOS关键词INCOMPRESSIBLE 2-PHASE FLOWS ; CONTACT-LINE DYNAMICS ; MULTIPHASE FLOWS ; LARGE DENSITY ; MODEL ; SIMULATION ; EQUATION
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研究方向Engineering
语种英语
WOS记录号WOS:000602324000001
出版者MDPI
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
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.Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Proc Engn, CAS Key Lab Green Proc & Engn, Beijing 100190, 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.

入库方式： OAI收割

来源：过程工程研究所

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