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DC Field | Value | Language |
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dc.citation.endPage | 1627 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 1619 | - |
dc.citation.title | PROCEEDINGS OF THE COMBUSTION INSTITUTE | - |
dc.citation.volume | 33 | - |
dc.contributor.author | Yoo, Chun Sang | - |
dc.contributor.author | Richardson, Edward S. | - |
dc.contributor.author | Sankaran, Ramanan | - |
dc.contributor.author | Chen, Jacqueline H. | - |
dc.date.accessioned | 2023-12-22T06:37:30Z | - |
dc.date.available | 2023-12-22T06:37:30Z | - |
dc.date.created | 2013-05-30 | - |
dc.date.issued | 2011-01 | - |
dc.description.abstract | Direct numerical simulation (DNS) of the near-field of a three-dimensional spatially-developing turbulent ethylene jet flame in highly-heated coflow is performed with a reduced mechanism to determine the stabilization mechanism. The DNS was performed at a jet Reynolds number of 10,000 with over 1.29 billion grid points. The results show that auto-ignition in a fuel-lean mixture at the flame base is the main source of stabilization of the lifted jet flame. The Damkohler number and chemical explosive mode (CEM) analysis also verify that auto-ignition occurs at the flame base. In addition to auto-ignition, Lagrangian tracking of the flame base reveals the passage of large-scale flow structures and their correlation with the fluctuations of the flame base similar to a previous study (Yoo et al., J. Fluid Mech. 640 (2009) 453-481) with hydrogen/air jet flames. It is also observed that the present lifted flame base exhibits a cyclic 'saw-tooth' shaped movement marked by rapid movement upstream and slower movement downstream. This is a consequence of the lifted flame being stabilized by a balance between consecutive auto-ignition events in hot fuel-lean mixtures and convection induced by the high-speed jet and coflow velocities. This is confirmed by Lagrangian tracking of key variables including the flame-normal velocity, displacement speed, scalar dissipation rate, and mixture fraction at the stabilization point. | - |
dc.identifier.bibliographicCitation | PROCEEDINGS OF THE COMBUSTION INSTITUTE, v.33, no.1, pp.1619 - 1627 | - |
dc.identifier.doi | 10.1016/j.proci.2010.06.147 | - |
dc.identifier.issn | 1540-7489 | - |
dc.identifier.scopusid | 2-s2.0-78650893486 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/3031 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=78650893486 | - |
dc.identifier.wosid | 000285780200179 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE INC | - |
dc.title | A DNS study on the stabilization mechanism of a turbulent lifted ethylene jet flame in highly-heated coflow | - |
dc.type | Article | - |
dc.relation.journalWebOfScienceCategory | Thermodynamics; Energy & Fuels; Engineering, Chemical; Engineering, Mechanical | - |
dc.relation.journalResearchArea | Thermodynamics; Energy & Fuels; Engineering | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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