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

doi:10.1016/j.ijhydene.2019.12.004

CORC > 力学研究所 > 中国科学院力学研究所 > 高温气体动力学国家重点实验室

	Numerical investigation on the performance of bluff body augmented micro cavity-combustor
	Zhang Z 2,3; Wu K(吴坤)4; Yuen R 2; Yao W(姚卫)1,4; Wang J 3
刊名	INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
	2020-02-07
卷号	45 期号:7 页码:4932-4945
关键词	Micro combustor Cavity Bluff body Combustion efficiency Local Damkohler number
ISSN号	0360-3199
DOI	10.1016/j.ijhydene.2019.12.004
通讯作者	Yao, Wei(weiyao@imech.ac.cn) ; Wang, Jian(wangj@ustc.edu.cn)
英文摘要	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.
分类号	二类
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]
WOS关键词	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
语种	英语
WOS记录号	WOS:000514018600089
资助机构	National Key R&D Program of China ; Training Program of the Major Research Plan of National Natural Science Foundation of China
其他责任者	Yao, Wei ; Wang, Jian
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/81613]
专题	力学研究所_高温气体动力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China; 2.City Univ Hong Kong, Dept Civil & Architectural Engn, Kowloon, Hong Kong, Peoples R China 3.Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230026, Anhui, Peoples R China; 4.Chinese Acad Sci, Inst Mech, State Key Lab High Temp Gas Dynam, Beijing 100190, 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.