지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술대회자료
- 저자정보
- 발행연도
- 2014.5
- 수록면
- 297 - 300 (4page)
이용수
이 논문의 연구 히스토리 (8)
2014
2012
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초록· 키워드
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A laminar lifted propane coflow-jet flame diluted with nitrogen was experimentally investigated to identify the effect of coflow air velocity. Flame stability maps with the functional dependencies of fuel jet velocity and fuel mole fraction were provided at various coflow air velocities. The results showed that the lift-off height was significantly sensitive to the coflow velocity compared with the fuel jet velocity. Four regimes were identified by coflow air velocity: (Ⅰ) a heat-loss-induced self-excitation (HLISE) in 0 ＜ VCO ＜ 5 , (Ⅱ) a stationary lifted flame in 5 ≤ VCO ≤10 , (Ⅲ) an intermittent HLISE in 10 ＜ VCO ＜ 40 , and (Ⅳ) a stationary lifted flame in VCO ≥ 40. There existed a critical lift-off height over which an intermittent HLISE was restored. Such regimes and the intermittent HLISE were shown to appear because the tribrachial flame speed was influenced by several competition factors: fuel concentration gradient (flame curvature), conductive heat loss from premixed wings to trailing diffusion flame, and preheated, partially premixed reactant influx into tribrachial flame due to introducing colfow air. The mechanisms of such regimes and the intermittent HLISE were discussed.
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UCI(KEPA) : I410-ECN-0101-2015-430-001632430