Journal of the Korean Society of Propulsion Engineers (한국추진공학회지)

The Korean Society of Propulsion Engineers (한국추진공학회)
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Comparison of Dynamic Characteristics of Methane/Air and Propane/Air Premixed Flames with Ultrasonic Standing Wave

정상초음파가 개재하는 메탄/공기 및 프로판/공기 예혼합화염의 동역학적 특성 비교

  • Kim, Min Cheol (Department of Material Engineering, Undergraduate School, Pukyong National University) ;
  • Bae, Dae Seok (Department of Mechanical Engineering, Pukyong National University) ;
  • Kim, Jeong Soo (Department of Mechanical Engineering, Pukyong National University)
  • Received : 2017.05.10
  • Accepted : 2017.06.29
  • Published : 2017.08.01
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Abstract

An experimental results on the dynamic characteristics of hydrocarbon/air premixed flames with ultrasonic standing waves are presented and compared. Images of the propagating flames were acquired by using a high-speed camera, and the flame behavior of methane/air and propane/air premixed flame were closely scrutinized through the image post-processing. At the fuel-lean conditions, the flame propagation velocity increased due to the intervention of the ultrasonic standing wave and vice versa at the fuel-rich conditions.

정상초음파가 개재하는 탄화수소계 연료공기 예혼합화염의 동역학적 특성 비교에 대한 실험적 연구결과를 제시한다. 전파화염의 이미지는 고속카메라를 이용하여 획득하였으며, 이미지 후처리를 통해 메탄/공기와 프로판/공기 예혼합화염의 화염거동을 상세히 관찰하였다. 이론당량비 이하의 연료희박조건에서 정상초음파 개재에 의한 연소반응 촉진으로 인해 화염전파속도는 증가되었다. 한편, 당량비가 1.2인 메탄/공기 화염과 당량비 1.4 이상의 프로판/공기 화염의 전파속도에 대한 초음파의 영향은 연료희박조건과 반대되는 결과를 보였다.

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References

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