Research on Performance of H2 Rich Blowout Limit in Bluff-Body Burner
Joint Authors
Zheng, Hongtao
Li, Yajun
Cai, Lin
Source
Mathematical Problems in Engineering
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-28, 28 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2012-12-13
Country of Publication
Egypt
No. of Pages
28
Main Subjects
Abstract EN
In order to investigate H2 rich blowout limit at different blockage ratios and flow velocities, a CFD software FLUENT was used to simulate H2 burning flow field in bluff-body burner, and the software CHEMKIN was adopted to analyze the sensitivity of each elementary reaction.
Composition Probability Density Function (C-PDF) model was adopted to simulate H2 combustion field in turbulence flame.
The numerical results show that reactions R2 and R9 possess the largest positive and negative temperature sensitivity.
Temperature has a very important influence on these two reactions.
When equivalence ratio is 1, the mixture is most ignitable, and the critical ignition temperature is 1550 K.
There should be an optimal blockage ratio which can stabilize the flame best.
When the blockage ratio remains unchanged, the relationship between H2 RBL and flow velocity is a logarithmic function.
When the flow velocity remains unchanged, the relationship between H2 RBL and blockage ratio is a parabolic function.
A complete extinction requires three phases: the temperature sudden decline in the main stream, the energy dissipation from the recirculation zone to the main stream, and the complete extinction of the flame.
American Psychological Association (APA)
Zheng, Hongtao& Li, Yajun& Cai, Lin. 2012. Research on Performance of H2 Rich Blowout Limit in Bluff-Body Burner. Mathematical Problems in Engineering،Vol. 2012, no. 2012, pp.1-28.
https://search.emarefa.net/detail/BIM-1001484
Modern Language Association (MLA)
Zheng, Hongtao…[et al.]. Research on Performance of H2 Rich Blowout Limit in Bluff-Body Burner. Mathematical Problems in Engineering No. 2012 (2012), pp.1-28.
https://search.emarefa.net/detail/BIM-1001484
American Medical Association (AMA)
Zheng, Hongtao& Li, Yajun& Cai, Lin. Research on Performance of H2 Rich Blowout Limit in Bluff-Body Burner. Mathematical Problems in Engineering. 2012. Vol. 2012, no. 2012, pp.1-28.
https://search.emarefa.net/detail/BIM-1001484
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1001484