CFD simulation of bubble column hydrodynamics with a novel drag model based on EMMS approach

doi:10.1016/j.ces.2021.116758

	CFD simulation of bubble column hydrodynamics with a novel drag model based on EMMS approach
	Guan, Xiaoping 1,2,3; Yang, Ning 1,2
刊名	CHEMICAL ENGINEERING SCIENCE
	2021-11-02
卷号	243 页码:11
关键词	DBS model Drag model Swarm effect CFD Bubble column
ISSN号	0009-2509
DOI	10.1016/j.ces.2021.116758
英文摘要	Drag model is of critical importance for CFD simulation of flow characteristics in bubble columns. In this study, a novel drag model termed DBS-Local for the ratio of effective drag coefficient to bubble diameter is derived from the Dual-Bubble-Size (DBS) model based on Energy-Minimization Multi-Scale (EMMS). A thorough comparison demonstrates that without adjustable parameters, both the DBS-Local model and the DBS-Global model are capable of improving the prediction of total and local gas holdup as well as the flow characteristics in different flow regimes. By contrast, other drag models either overestimate or underestimate the total or local gas holdup in certain flow regimes. Moreover, the centerline liquid velocity predicted by DBS-Local model shows best agreement with experiments, whereas the other models, especially the Ishii-Zuber model, over-estimate liquid velocity. This study demonstrates the significance of modeling the bubble-swarm effect based on EMMS approach. (c) 2021 Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[21925805] ; National Natural Science Foundation of China[91834303] ; National Natural Science Foundation of China[21808222] ; National Natural Science Foundation of China[22061130204] ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences[IAGM-2019-A13] ; Royal Society[NAF \R1\201305]
WOS关键词	DIRECT NUMERICAL SIMULATIONS ; FLOW-REGIME TRANSITIONS ; RISE VELOCITY ; GAS HOLDUP ; STABILITY CONDITION ; SCALE-UP ; PART 2 ; DYNAMICS ; REACTORS ; SWARM
WOS研究方向	Engineering
语种	英语
出版者	PERGAMON-ELSEVIER SCIENCE LTD
WOS记录号	WOS:000663706500002
资助机构	National Natural Science Foundation of China ; Innovation Academy for Green Manufacture, Chinese Academy of Sciences ; Royal Society
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/49250]
专题	中国科学院过程工程研究所
通讯作者	Yang, Ning
作者单位	1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, POB 353, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Chem Engn, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Innovat Acad Green Manufacture, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Guan, Xiaoping,Yang, Ning. CFD simulation of bubble column hydrodynamics with a novel drag model based on EMMS approach[J]. CHEMICAL ENGINEERING SCIENCE,2021,243:11.
APA	Guan, Xiaoping,&Yang, Ning.(2021).CFD simulation of bubble column hydrodynamics with a novel drag model based on EMMS approach.CHEMICAL ENGINEERING SCIENCE,243,11.
MLA	Guan, Xiaoping,et al."CFD simulation of bubble column hydrodynamics with a novel drag model based on EMMS approach".CHEMICAL ENGINEERING SCIENCE 243(2021):11.