Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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A Study on Response Characteristics of Jet-diffusion Flame and Premixed Flame with Various Velocity Perturbations

제트확산화염과 예혼합화염의 다양한 속도 섭동에 대한 응답 특성

  • Ahn, Myunggeun (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, Taesung (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kim, Heuydong (School of Mechanical Engineering, Andong National University) ;
  • Yoon, Youngbin (Department of Mechanical and Aerospace Engineering, Seoul National University)
  • 안명근 (서울대학교 기계항공공학부) ;
  • 김태성 (서울대학교 기계항공공학부) ;
  • 김희동 (안동대학교 기계공학부) ;
  • 윤영빈 (서울대학교 기계항공공학부)
  • Received : 2017.01.31
  • Accepted : 2017.04.25
  • Published : 2017.06.30
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Abstract

An experimental study investigates the flame response characteristics of jet-diffusion flame and premixed flame. The experiment was conducted while varying the amplitude. Flame lengths were quantified for OH chemiluminescence measurement and compared with the result of the flame transfer function. Flame length and flame velocity perturbation were normalized and compared with the result of the flame transfer function. The comparison results appear that velocity perturbation and flame length oscillation of premixed flame show linear behaviors on the other hand jet-diffusion flame, amplitudes are more thant 0.20, shows nonlinear behaviors of flame velocity perturbation and flame length oscillation.

Keywords

References

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