대한기계학회논문집B (Transactions of the Korean Society of Mechanical Engineers B)

  • 제26권7호
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  • Pages.1039-1046
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  • 2002
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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층류 예혼합 화염의 예열공기 연소특성

Characteristics of Preheated Air Combustion in a Laminar Premixed Flame

  • 이종호 (부산대학교 대학원 기계공학과) ;
  • 이승영 (부산대학교 대학원 기계공학과) ;
  • 한재원 (한국표준과학연구원, 레이저계측그룹) ;
  • 장영준 (부산대학교 기계공학부) ;
  • 전충환 (부산대학교 기계공학부, 기계기술연구소)
  • 발행 : 2002.07.01
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초록

Co-flow axisymmetric laminar premixed flame of methane was used to study the influence of air temperature and $N_2$ addition on the flame structure, temperature field and emission characteristics. OH 2-D images and temperatures along the centerline were measured experimentally by PLIF and CARS techniques respectively to observe the influences of dilution and thermal effects of $N_2$ in the gas mixture. Also, the concentration of NOx was measured at each condition by gas analyser to see the suppression effect of N2 addition on NOx emissions. It was found that OH concentrations distribute widely as air temperature goes higher, while the effect of $N_2$ addition is not significant. But $N_2$ addition highly contributes to the flame front and NOx emissions which was argued to be due to the reduction of flame temperature. In accordance with experimental study, numerical simulation using CHEMKlN code was carried out to compare the temperature results with those acquired by CARS measurement, and we could find that there is good agreement between those results.

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참고문헌

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