한국추진공학회지 (Journal of the Korean Society of Propulsion Engineers)

  • 제19권4호
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  • Pages.45-51
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  • 2015
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  • 1226-6027(pISSN)
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  • 2288-4548(eISSN)
한국추진공학회 (The Korean Society of Propulsion Engineers)
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정상초음파의 영향을 받는 메탄-공기 예혼합화염의 주파수-당량비 상관도 분석(II)

Frequency-Equivalence Ratio Correlation Analysis of Methane-Air Premixed Flame Influenced by Ultrasonic Standing Wave (II)

  • Kim, Min Sung (Department of Mechanical Engineering, Graduate School, Pukyong National University) ;
  • Bae, Dae Seok (Department of Mechanical Engineering, Pukyong National University) ;
  • Kim, Jeong Soo (Department of Mechanical Engineering, Pukyong National University)
  • 투고 : 2015.06.03
  • 심사 : 2015.07.07
  • 발행 : 2015.08.01
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초록

정상초음파의 영향을 받는 메탄-공기 예혼합화염의 주파수-당량비 상관도 분석을 위한 실험적 연구가 수행되었다. 슐리렌가시화기법을 이용하여 예혼합화염의 전파영상을 획득하였으며, 영상 후처리를 통해 화염의 구조변이 및 전파거동을 면밀히 관찰하였다. 정상초음파가 개재할 때, 화염선단과 기연부에서 구조적 변이와 연소반응 촉진으로 인한 화염의 전파속도의 증가를 가져온다는 사실에 더하여, 초음파 구동주파수와 당량비에 대한 화염거동의 종속성을 확인하였다.

An experimental study was performed for the analysis of frequency-equivalence ratio correlation in the methane-air premixed flame influenced by ultrasonic standing wave. The propagating flame was caught by high-speed Schlieren photography, and the variation of flame-behavior including the flame structure was investigated in detail employing a post-processing analysis of the high-speed images. It was found that a structural variation and propagation-velocity augmentation of the methane-air premixed flame by the intervention of ultrasonic standing wave were more caused off around the stoichiometry. Also, a dependency of the flame behaviors on the driving frequency and equivalence ratio of the reactants was confirmed.

키워드

참고문헌

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