Earticle

초록

영어

The combustion instability in a dual swirl combustor was investigated experimentally. The effects of thermal power and combustor length on combustion instability were evaluated. Pressure and heat release fluctuation were measured simultaneously. In a conventional combustor, the frequency was decreased with increasing combustor length and decreasing thermal power. However, it showed different results with a dual swirl combustor. In regime 1 where thermal power was relatively high, the results showed same tendency with a conventional combustor. In regime 2 where thermal power was relatively low, the frequency was almost constant with increasing combustor length. It was found that a beating phenomenon occurred with increased combustor length in regime 2 by measuring sound pressure fluctuation. By confirming that beating phenomenon occurs only in regime 2, it is considered that beating phenomenon is the dominant factor of combustion instability in regime 2. This beating phenomenon inside combustion chamber greatly affected to combustion instability. The reason of the beating phenomenon seemed to be the difference oscillating period between main flame and pilot flame.

목차

ABSTRACT
 1. 서론
 2. 실험 장치 및 실험 방법
  2.1 실험 장치
  2.2 실험 조건
  2.3 실험 방법
 3. 실험 결과 및 고찰
  3.1 주파수 분석
  3.2 음압 신호 분석
  3.3 맥놀이 현상 검증
 4. 결론
 후기
 References

키워드

저자

• 장문석 [ Mun-Seok Jang | Department of Aerospace Engineering, Sunchon National University ]
• 이용호 [ Yong-Ho Lee | School of Mechanical and Aerospace Engineering, Sunchon National University ]
• 강기중 [ Ki-Joong Kang | Member, School of Mechanical Engineering, Pusan National University ] Corresponding author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국기계항공기술학회지(구 한국기계기술학회지) [Journal of the Korean Society of Mechanical and Aviation Technology ]

• 간기

  격월간

• pISSN

  1229-604X

• eISSN

  2508-3805

• 수록기간

  1999~2026

• 등재여부

  KCI 등재

• 십진분류

  KDC 550 DDC 620