Journal of the Korean Society of Combustion (한국연소학회지)

The Korean Society of Combustion (한국연소학회)
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The Response of the Burke-Schumann Flame to External Excitation with Flame Shape and Heat Release

외부 교란에 대한 Burke-Schumann 화염에서 형상과 열방출량을 통한 응답 특성 파악

  • Kim, Taesung (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Ahn, Myunggeun (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Hwang, Jeongjae (Department of Eco-Machinery System, Korea Institute of Machinery and Materials) ;
  • Jeong, Chanyeong (Department of Mechanical and Aerospace Engineering, Seoul National University) ;
  • Kwon, Oh Chae (School of Mechanical Engineering, Sungkyunkwan University) ;
  • Yoon, Youngbin (Department of Mechanical and Aerospace Engineering and the Institute of Advanced Aerospace Technology, Seoul National University)
  • 김태성 (서울대학교 기계항공공학부) ;
  • 안명근 (서울대학교 기계항공공학부) ;
  • 황정재 (한국기계연구원 환경.에너지기계연구본부 환경기계시스템연구실) ;
  • 정찬영 (서울대학교 기계항공공학부) ;
  • 권오채 (성균관대학교 기계공학부) ;
  • 윤영빈 (서울대학교 기계항공공학부 및 항공우주신기술연구소)
  • Received : 2017.01.31
  • Accepted : 2017.03.05
  • Published : 2017.03.30
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Abstract

This paper shows the dynamics of the Burke-Schumann flame. To show flame dynamics, this paper measures the flame surface and heat release rate. The flame shape is divided into three types with forcing frequencies. When the forcing frequency is lower than 120 Hz, the upper region of flame is cut. The flame is stagnant with 220 to 280 Hz forcing frequencies. The rest conditions of forcing frequencies make the connected wave shape of flame. The heat release rate is expressed by the flame transfer function. The gain of the flame transfer function is similar with the oscillation magnitude of the flame area except for flame cutting conditions. The flame is cut because the fuel is not supplied to upper flame region.

Keywords

References

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