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Yoo, Chun Sang
Clean Combustion & Energy Research Lab
Research Interests
  • Carbon-free combustion
  • Numerical turbulent combustion
  • Combustion modelling
  • Hydrogen/Ammonia Gas turbine combustion


Dynamics of bluff-body-stabilized premixed hydrogen/air flames in a narrow channel

DC Field Value Language Lee, Bok Jik ko Yoo, Chun Sang ko Im, Hong G. ko 2015-04-24T06:40:40Z - 2015-04-24 ko 2015-06 ko
dc.identifier.citation COMBUSTION AND FLAME, v.162, no.6, pp.2602 - 2609 ko
dc.identifier.issn 0010-2180 ko
dc.identifier.uri -
dc.description.abstract Two-dimensional direct numerical simulations were conducted for bluff-body stabilized flames of a lean hydrogen/air mixture at near-blowoff conditions in a meso-scale channel. Parametric simulations were conducted by incrementally varying the inflow velocity in the vicinity of the blowoff limit, and the corresponding flame response was monitored. The present study is a showcase of combustion DNS with embedded boundary representation, and full demonstration of the detailed visualization of the near-blowoff flame characteristics. As the inflow velocity approaches blowoff limit, the flame dynamics exhibit a complex sequence of events, such as periodic local extinction and recovery, and regrowth of the bulk flame by the flame segments attached behind the bluff-body. The total extinction is observed as the attached flames shrink down and are no longer able to regrow the bulk flames. Despite the disparity in the physical scale under study, the observed sequence of the extinction pathway shows a strong similarity with experimental observations at larger scale combustion systems. ko
dc.description.statementofresponsibility close -
dc.language 영어 ko
dc.publisher ELSEVIER SCIENCE INC ko
dc.title Dynamics of bluff-body-stabilized premixed hydrogen/air flames in a narrow channel ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-84937758313 ko
dc.identifier.wosid 000360592600026 ko
dc.type.rims ART ko
dc.description.wostc 0 *
dc.description.scopustc 0 * 2015-12-28 * 2015-07-21 *
dc.identifier.doi 10.1016/j.combustflame.2015.03.009 ko
dc.identifier.url ko
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