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The Chemiluminescence and Structure Properties of NormalInverse Diffusion Flames
Joint Authors
Guo, Qinghua
Yu, Guangsuo
Song, Xudong
Zhou, Zhijie
Zhang, Ting
Source
Issue
Vol. 2013, Issue 2013 (31 Dec. 2013), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-11-07
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Abstract EN
The flame emission spectrometry was applied to detect the distribution of excited radicals in two types CH4/O2 coflow jet diffusion flames (normal and inverse diffusion flames).
Combining the image analysis along with the spectrometry, the chemiluminescence and structure characteristics of these diffusion flames were investigated.
The results show that the inverse diffusion flame (IDF) with relatively high inlet oxygen velocity is composed of two regions: a bright base and a tower on top of the base, which is quite different from the normal diffusion flame (NDF).
The flame is divided into two regions along the flame axis based on maximum OH* position (Region I: initial reaction zone; Region II: further oxidation zone).
The degree of the further oxidization taking place in Region II is obvious in accordance with OH* distribution, which is the main difference in reaction zone between fuel-rich condition and fuel-lean condition for NDFs.
For IDFs, the change of OH* distribution with increasing equivalence O/C ratio ([O/C]e) in Region II is not conspicuous.
More OH* and CH* are generated in IDFs, due to the inner high-speed O2 flow promoting the mixing of fuel and oxygen to a certain extent.
American Psychological Association (APA)
Zhang, Ting& Guo, Qinghua& Song, Xudong& Zhou, Zhijie& Yu, Guangsuo. 2012. The Chemiluminescence and Structure Properties of NormalInverse Diffusion Flames. Journal of Spectroscopy،Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-461891
Modern Language Association (MLA)
Zhang, Ting…[et al.]. The Chemiluminescence and Structure Properties of NormalInverse Diffusion Flames. Journal of Spectroscopy No. 2013 (2013), pp.1-7.
https://search.emarefa.net/detail/BIM-461891
American Medical Association (AMA)
Zhang, Ting& Guo, Qinghua& Song, Xudong& Zhou, Zhijie& Yu, Guangsuo. The Chemiluminescence and Structure Properties of NormalInverse Diffusion Flames. Journal of Spectroscopy. 2012. Vol. 2013, no. 2013, pp.1-7.
https://search.emarefa.net/detail/BIM-461891
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-461891