Asymptotic analysis of outwardly propagating spherical flames

doi:10.1007/s10409-012-0008-8

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	Asymptotic analysis of outwardly propagating spherical flames
	Wu, Yun-Chao ; Chen, Zheng
刊名	acta mechanica sinica
	2012
关键词	Propagating spherical flames Asymptotic analysis Lewis number Stretch rate LAMINAR BURNING VELOCITIES HYDROGEN-AIR MIXTURES LEWIS NUMBER MARKSTEIN NUMBERS PREMIXED FLAMES DIMETHYL ETHER EXTINCTION RADIATION PRESSURES IGNITION
DOI	10.1007/s10409-012-0008-8
英文摘要	Asymptotic analysis is conducted for outwardly propagating spherical flames with large activation energy. The spherical flame structure consists of the preheat zone, reaction zone, and equilibrium zone. Analytical solutions are separately obtained in these three zones and then asymptotically matched. In the asymptotic analysis, we derive a correlation describing the spherical flame temperature and propagation speed changing with the flame radius. This correlation is compared with previous results derived in the limit of infinite value of activation energy. Based on this correlation, the properties of spherical flame propagation are investigated and the effects of Lewis number on spherical flame propagation speed and extinction stretch rate are assessed. Moreover, the accuracy and performance of different models used in the spherical flame method are examined. It is found that in order to get accurate laminar flame speed and Markstein length, non-linear models should be used.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000303861000013&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Mechanical; Mechanics; SCI(E); 中国科技核心期刊(ISTIC); 中国科学引文数据库(CSCD); 5; ARTICLE; 2; 359-366; 28
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/154627]
专题	工学院
推荐引用方式 GB/T 7714	Wu, Yun-Chao,Chen, Zheng. Asymptotic analysis of outwardly propagating spherical flames[J]. acta mechanica sinica,2012.
APA	Wu, Yun-Chao,&Chen, Zheng.(2012).Asymptotic analysis of outwardly propagating spherical flames.acta mechanica sinica.
MLA	Wu, Yun-Chao,et al."Asymptotic analysis of outwardly propagating spherical flames".acta mechanica sinica (2012).