Numerical investigation on the performance of bluff body augmented micro cavity-combustor

doi:10.1016/j.ijhydene.2019.12.004

	Numerical investigation on the performance of bluff body augmented micro cavity-combustor
	Zhang Z 1,4; Wu K(吴坤)2; Yuen R 4; Yao W(姚卫)2,3 ; Wang J1
通讯作者	Yao, Wei(weiyao@imech.ac.cn) ; Wang, Jian(wangj@ustc.edu.cn)
发表期刊	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
	2020-02-07
卷号	45 期号:7 页码:4932-4945
ISSN	0360-3199
摘要	Bluff body augmented micro-cavity combustors are proposed in this study to enhance the combustion efficiency under high inlet velocities. The original and two types of bluff body supplemented micro cavity combustors, namely CAVITY, TRIANGLE, and FIN combustors are numerically investigated. The results show that the combustion efficiency (eta(c)) of bluff body augmented combustors are higher than that of the CAVITY combustor, and the largest increment of 10.8% is obtained in the FIN combustor. The underlying mechanisms for the improvement in eta(c) of the FIN and TRIANGLE combustors have been analyzed. It is demonstrated that the altered flow field structures and transvers reactant transport induced by the bluff body play dominant roles. Moreover, the local Damkohler number (Da(L)) is introduced, which is defined as the ratio of the local hydrogen reaction rate and the convective mass transport rate. The variation of eta(c), along the streamwise direction in the proposed combustors is determined by the value of Da(L). (C) 2019 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.
关键词	Micro combustor Cavity Bluff body Combustion efficiency Local Damkohler number
DOI	10.1016/j.ijhydene.2019.12.004
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000514018600089
关键词[WOS]	PREMIXED HYDROGEN/AIR FLAMES ; LEAN H-2/AIR FLAMES ; HEAT RECIRCULATION ; SPLITTING LIMIT ; EFFICIENCY ; WALL ; TEMPERATURE ; STABILIZATION ; MICROCHANNELS ; PROPAGATION
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels
资助项目	National Key R&D Program of China[2018YFC0809500] ; Training Program of the Major Research Plan of National Natural Science Foundation of China[91641110]
项目资助者	National Key R&D Program of China ; Training Program of the Major Research Plan of National Natural Science Foundation of China
论文分区	二类
力学所作者排名	1
RpAuthor	Yao, Wei ; Wang, Jian
引用统计	被引频次：40[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/81614
专题	高温气体动力学国家重点实验室
作者单位	1.Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 4.City Univ Hong Kong, Dept Civil & Architectural Engn, Kowloon, Hong Kong, Peoples R China
推荐引用方式 GB/T 7714	Zhang Z,Wu K,Yuen R,et al. Numerical investigation on the performance of bluff body augmented micro cavity-combustor[J]. INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,2020,45,7,:4932-4945.
APA	Zhang Z,吴坤,Yuen R,姚卫,&Wang J.(2020).Numerical investigation on the performance of bluff body augmented micro cavity-combustor.INTERNATIONAL JOURNAL OF HYDROGEN ENERGY,45(7),4932-4945.
MLA	Zhang Z,et al."Numerical investigation on the performance of bluff body augmented micro cavity-combustor".INTERNATIONAL JOURNAL OF HYDROGEN ENERGY 45.7(2020):4932-4945.

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