DC Field | Value | Language |
---|---|---|
dc.contributor.author | KIM, NAM IL | ko |
dc.contributor.author | Seo, JI | ko |
dc.contributor.author | Guahk, YT | ko |
dc.contributor.author | Shin, Hyun Dong | ko |
dc.date.accessioned | 2009-08-10T09:03:54Z | - |
dc.date.available | 2009-08-10T09:03:54Z | - |
dc.date.created | 2012-02-06 | - |
dc.date.created | 2012-02-06 | - |
dc.date.issued | 2006-07 | - |
dc.identifier.citation | COMBUSTION AND FLAME, v.146, no.1-2, pp.168 - 179 | - |
dc.identifier.issn | 0010-2180 | - |
dc.identifier.uri | http://hdl.handle.net/10203/10489 | - |
dc.description.abstract | A flame formulated in a mixing layer has a typical structure of a tribrachial (or triple) flame. The propagation velocity of a tribrachial flame is much higher than the laminar burning velocity of a stoichiometric premixed flame, and the propagation velocity usually decreases as the gradient of fuel concentration increases. A separate experimental study that used a jet flow in an open space reported that there is a maximum propagation velocity at a critical fuel concentration gradient coupled with the enhancement of a diffusion flame branch and that the critical concentration gradient can be varied even by the difference in velocity variation near the flame. This study investigates how a confined flow field affects the structure of a tribrachial flame. The mean velocity and the concentration gradient of fuel were controlled by a multislot bumer. Laser diagnostic methods were used to measure the velocity variation, the OH radical, and the temperature variation. Even in a confined geometrical space, the existence of the maximum propagation velocity was confirmed. Moreover, the critical concentration gradients in a confined channel were larger than those in an open jet case; that is, the role of the diffusion flame at the maximum propagation velocity becomes more significant in a confined structure due to the enhanced convective diffusion. This result shows the importance of the diffusion branch in a confined (or squeezed) stream tube. (c) 2006 The Combustion Institute. Published by Elsevier Inc. All fights reserved. | - |
dc.description.sponsorship | The authors are grateful for support from the Combustion Engineering Research Center at the Korea Advanced Institute of Science and Technology. | en |
dc.language | English | - |
dc.language.iso | en_US | en |
dc.publisher | ELSEVIER SCIENCE INC | - |
dc.subject | TRIPLE-FLAME | - |
dc.subject | NONPREMIXED JET | - |
dc.subject | STABILIZATION | - |
dc.subject | EXTINCTION | - |
dc.title | The propagation of tribrachial flames in a confined channel | - |
dc.type | Article | - |
dc.identifier.wosid | 000238732200013 | - |
dc.identifier.scopusid | 2-s2.0-33745210126 | - |
dc.type.rims | ART | - |
dc.citation.volume | 146 | - |
dc.citation.issue | 1-2 | - |
dc.citation.beginningpage | 168 | - |
dc.citation.endingpage | 179 | - |
dc.citation.publicationname | COMBUSTION AND FLAME | - |
dc.identifier.doi | 10.1016/j.combustflame.2006.04.001 | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | KIM, NAM IL | - |
dc.contributor.localauthor | Shin, Hyun Dong | - |
dc.contributor.nonIdAuthor | Seo, JI | - |
dc.contributor.nonIdAuthor | Guahk, YT | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | tribrachial flame | - |
dc.subject.keywordAuthor | triple flame | - |
dc.subject.keywordAuthor | propagation velocity | - |
dc.subject.keywordAuthor | flame stabilization | - |
dc.subject.keywordAuthor | concentration gradient | - |
dc.subject.keywordPlus | TRIPLE-FLAME | - |
dc.subject.keywordPlus | NONPREMIXED JET | - |
dc.subject.keywordPlus | STABILIZATION | - |
dc.subject.keywordPlus | EXTINCTION | - |
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