DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Kyu Tae | ko |
dc.contributor.author | Lee, Jong Guen | ko |
dc.contributor.author | Quay, Bryan | ko |
dc.contributor.author | Santavicca, Domenic | ko |
dc.date.accessioned | 2016-05-16T09:02:24Z | - |
dc.date.available | 2016-05-16T09:02:24Z | - |
dc.date.created | 2016-03-04 | - |
dc.date.created | 2016-03-04 | - |
dc.date.issued | 2011-02 | - |
dc.identifier.citation | COMBUSTION SCIENCE AND TECHNOLOGY, v.183, no.2, pp.163 - 179 | - |
dc.identifier.issn | 0010-2202 | - |
dc.identifier.uri | http://hdl.handle.net/10203/207572 | - |
dc.description.abstract | The authors analyze the dynamic response of swirl-stabilized flames submitted to upstream acoustic perturbation. Extensive measurements were performed in an optically accessible single-nozzle gas turbine combustor operating on natural gas-air at inlet temperatures of 200 and 300 degrees C over a range of equivalence ratios from 0.55 to 0.70, a range of inlet velocities from 60 to 100 m/s, and swirl angles of 30 degrees and 45 degrees. Temporal oscillations of inlet velocity and heat release rate in the whole flame were measured using the 2-microphone method and global OH*, CH*,and CO2* chemiluminescence emission intensities, respectively, whereas spatially resolved measurement of heat release rate was made using time-averaged CH* chemiluminescence flame images. For the dihedral V flames, amplification characteristic of the flame transfer function was observed. This effect is, unlike the amplification mechanism of a small laminar flame, controlled by the relative ratio of the two length scales, disturbance convective wavelength and flame length. The measured transfer functions show resonance-like behavior when a nondimensional number, the ratio of half the convective wavelength to flame length, approaches unity. It was found that the flame geometric properties, specifically flame angle, also play a crucial role in the flame transfer function. The frequency-dependent behavior of swirl-stabilized flames is closely related to eigenfrequency selection processes at limit cycle pressure oscillations. | - |
dc.language | English | - |
dc.publisher | TAYLOR FRANCIS INC | - |
dc.subject | EQUIVALENCE RATIO OSCILLATIONS | - |
dc.subject | INLET VELOCITY OSCILLATIONS | - |
dc.subject | LAMINAR PREMIXED FLAME | - |
dc.subject | COMBUSTION DYNAMICS | - |
dc.subject | NONLINEAR RESPONSE | - |
dc.subject | MODEL | - |
dc.subject | FLOW | - |
dc.subject | BURNER | - |
dc.subject | INSTABILITIES | - |
dc.subject | DISTURBANCES | - |
dc.title | THE DYNAMIC RESPONSE OF TURBULENT DIHEDRAL V FLAMES: AN AMPLIFICATION MECHANISM OF SWIRLING FLAMES | - |
dc.type | Article | - |
dc.identifier.wosid | 000285197000005 | - |
dc.type.rims | ART | - |
dc.citation.volume | 183 | - |
dc.citation.issue | 2 | - |
dc.citation.beginningpage | 163 | - |
dc.citation.endingpage | 179 | - |
dc.citation.publicationname | COMBUSTION SCIENCE AND TECHNOLOGY | - |
dc.identifier.doi | 10.1080/00102202.2010.508477 | - |
dc.contributor.localauthor | Kim, Kyu Tae | - |
dc.contributor.nonIdAuthor | Lee, Jong Guen | - |
dc.contributor.nonIdAuthor | Quay, Bryan | - |
dc.contributor.nonIdAuthor | Santavicca, Domenic | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Acoustic excitation | - |
dc.subject.keywordAuthor | Amplification | - |
dc.subject.keywordAuthor | Combustion instabilities | - |
dc.subject.keywordAuthor | Flame transfer functions | - |
dc.subject.keywordAuthor | Lean premixed | - |
dc.subject.keywordPlus | EQUIVALENCE RATIO OSCILLATIONS | - |
dc.subject.keywordPlus | INLET VELOCITY OSCILLATIONS | - |
dc.subject.keywordPlus | LAMINAR PREMIXED FLAME | - |
dc.subject.keywordPlus | COMBUSTION DYNAMICS | - |
dc.subject.keywordPlus | NONLINEAR RESPONSE | - |
dc.subject.keywordPlus | MODEL | - |
dc.subject.keywordPlus | FLOW | - |
dc.subject.keywordPlus | BURNER | - |
dc.subject.keywordPlus | INSTABILITIES | - |
dc.subject.keywordPlus | DISTURBANCES | - |
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