DC Field | Value | Language |
---|---|---|
dc.contributor.author | Lee, Min Jung | ko |
dc.contributor.author | KIM, NAM IL | ko |
dc.date.accessioned | 2014-12-09T06:05:52Z | - |
dc.date.available | 2014-12-09T06:05:52Z | - |
dc.date.created | 2014-09-15 | - |
dc.date.created | 2014-09-15 | - |
dc.date.issued | 2014-09 | - |
dc.identifier.citation | COMBUSTION AND FLAME, v.161, no.9, pp.2361 - 2370 | - |
dc.identifier.issn | 0010-2180 | - |
dc.identifier.uri | http://hdl.handle.net/10203/192526 | - |
dc.description.abstract | An opposed flow non-premixed flame (OFNPF) in a narrow channel was chosen as a model of a non-premixed flame in a mesoscale combustion space or micro-combustor. The stabilization limits and behaviors of methane-air flames and propane-air flames were compared for various experimental parameters such as flow velocity, nozzle distance, nozzle width, channel gap, and fuel dilution. Flames could be stabilized in a wide range of strain rates (0.9-150 s(-1)) and dilution ratios (similar to 80% nitrogen at the fuel side). The flame extinction limits were classified into three types and their mechanisms were investigated: higher-strain-rate (HSR) extinction limit determined by the flame stretch, lower-strain-rate (LSR) extinction limit determined by the conductive or convective heat loss from the flame, and fuel-dilution-ratio (FDR) extinction limit determined by the decrease in the heat release rate from the flames. The HSR extinction limits in mesoscale channels could be explained with a modified strain rate, and the LSR extinction limits could be explained by employing a premixed quenching theory in which the heat loss through the dead space near the wall was considered as a major extinction mechanism. Finally, the variation of the extinction limits with the FDR in both the HSR and the LSR conditions could be explained with a modified global reaction rate in which the variations in flame temperature and species concentrations were reflected. This study provides an essential model for the stabilization and extinction of non-premixed flames in mesoscale combustion spaces. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE INC | - |
dc.subject | EDGE-FLAME | - |
dc.subject | COUNTERFLOW FIELD | - |
dc.subject | DIFFUSION FLAME | - |
dc.subject | METHANE FLAMES | - |
dc.subject | TRIPLE FLAME | - |
dc.subject | STRAIN | - |
dc.subject | EXTINCTION | - |
dc.subject | MICROGRAVITY | - |
dc.subject | PROPAGATION | - |
dc.subject | COMBUSTION | - |
dc.title | Flame structures and behaviors of opposed flow non-premixed flames in mesoscale channels | - |
dc.type | Article | - |
dc.identifier.wosid | 000340443400014 | - |
dc.identifier.scopusid | 2-s2.0-84905503881 | - |
dc.type.rims | ART | - |
dc.citation.volume | 161 | - |
dc.citation.issue | 9 | - |
dc.citation.beginningpage | 2361 | - |
dc.citation.endingpage | 2370 | - |
dc.citation.publicationname | COMBUSTION AND FLAME | - |
dc.identifier.doi | 10.1016/j.combustflame.2014.03.004 | - |
dc.contributor.localauthor | KIM, NAM IL | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Narrow channel | - |
dc.subject.keywordAuthor | Mesoscale combustion | - |
dc.subject.keywordAuthor | Opposed flow burner | - |
dc.subject.keywordAuthor | Non-premixed flame | - |
dc.subject.keywordAuthor | Flame extinction | - |
dc.subject.keywordAuthor | Strain rate | - |
dc.subject.keywordPlus | EDGE-FLAME | - |
dc.subject.keywordPlus | COUNTERFLOW FIELD | - |
dc.subject.keywordPlus | DIFFUSION FLAME | - |
dc.subject.keywordPlus | METHANE FLAMES | - |
dc.subject.keywordPlus | TRIPLE FLAME | - |
dc.subject.keywordPlus | STRAIN | - |
dc.subject.keywordPlus | EXTINCTION | - |
dc.subject.keywordPlus | MICROGRAVITY | - |
dc.subject.keywordPlus | PROPAGATION | - |
dc.subject.keywordPlus | COMBUSTION | - |
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