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    국내학술지 제목 게시판 내용
    제목(국문) 혼합기 공급방식에 따른 덤프연소기의 연소 불안정성에 관한 실험적 연구
    제목(영문) An Experimental Study on the Instability of Combustion in a Dump Combustor with Respect to Fuel and Air Mixing and Flow Conditions
    저자 홍정구 (Jung Goo Hong ,한국과학기술원 대학원 기계공학과 ) ▷공저자네트워크등록하기
    이민철 (Min Chul Lee ,한전 전력연구원 ) ▷공저자네트워크등록하기
    이은도 (Uen Do Lee ,한국과학기술원 대학원 기계공학과 ) ▷공저자네트워크등록하기
    오광철 (Kwang Chul Oh ,자동차부품연구원 ) ▷공저자 네트워크 보기
    신현동 (Hyun Dong Shin ,한국과학기술원 기계공학과, hoshin@kaist.ac.kr ) ▷공저자네트워크등록하기
    초록 The combustion instability of turbulent flames is the most important problem of the gas turbine combustor. Thus improved understanding of mechanisms of combustion instability is necessary for the design and operation of gas turbine combustors. In this study, the cause of the combustion instability in a rearward-step dump combustor was investigated with respect to the fuel flow modulation; choked fuel flow, unchoked fuel flow and fully premixed mixture flow. We observed various types of combustion instabilities with respect to the change of equivalence ratio, fuel flow conditions and fuel injection location. Particularly in the unchoked fuel flow condition, it was found that the oscillation time of combustion instability is strongly related to the convection time of the fuel and that the pressure fluctuation in a lab-scale combustor is highly related to the vortex and the equivalence ratio fluctuations due to fuel flow modulation and unmixedness of the fuel and air.
    keyword Combustion Instability(불안정성), Heat Release Rate Fluctuation(열발생률 변동), Equivalence Ratio Fluctuation(당량비 변동),Unmixedness(혼합정도), Vortex(와동)
    저널명 대한기계학회논문집 B ▷관련저널보기
    VOL 29
    PAGE 963-970
    발표년도 2005
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    • 페이스북아이콘
    • 트위터 아이콘

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