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http://dx.doi.org/10.7316/KHNES.2015.26.4.347

A Study on the Lifted Flame Structure with Strain Rates in Premixed Impinging Jet Flames of Syngas (H2/CO)  

SIM, KEUNSEON (School of Mechanical and Aerospace Engineering, Sunchon National University)
JANG, BYOUNGLOK (R&D Center, SAC Co., Ltd.)
LEE, KEEMAN (School of Mechanical and Aerospace Engineering, Sunchon National University)
Publication Information
Transactions of the Korean hydrogen and new energy society / v.26, no.4, 2015 , pp. 347-356 More about this Journal
Abstract
A study has been conducted numerically to investigate the lifted flat syngas flame structure of impinging jet flame configuration with the global strain rates in 10% hydrogen content. In this study, the effects of strain rate were major parameters on chemistry kinetics and flame structure at stagnation point. The numerical results were calculated by SPIN application of the CHEMKIN package. The strain rates were adjusted with Reynolds numbers of premixed syngas-air mixture. Different flame shapes were observed with different strain rates. As strain rate has increased, the flame temperature and axial velocity have been decreased due to the flame heat loss increment, and the OH radical reaction zones become narrower but each mole fractions are still constant. Also, the reversion of $H_2O$ product near stagnation point has been found out when strain rate has increased. This phenomenon is attributed to the rapid production of oxidizing radical reaction such as the R12 ($H+O_2(+M)=HO_2(+M)$), which makes the R18 ($HO_2+OH=O_2+H_2O$) reaction increment.
Keywords
Impinging jet flame; Syngas; Lifted flame; Strain rate; Flame structure;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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