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
- 2010.6
- 수록면
- 135 - 140 (6page)
이용수
초록· 키워드
오류제보하기
The autoignition characteristics of laminar lifted flames of methane, ethane, propane and n-butane fuels have been investigated experimentally in coflow air with elevated temperature over 800 K. The lifted flames were categorized into three regimes depending on the initial temperature and fuel mole fraction; (1) non-autoignited lifted flame, (2) autoignited lifted flame with tribrachial (or triple) edge, and (3) autoignited lifted flame with mild combustion.
For the non-autoignited lifted flames for relatively low temperature, the existence of lifted flame depended on the Schmidt number of fuel, such that only the fuels with Sc > 1 exhibited stationary lifted flames, similar to the case with atmospheric temperature. The balance mechanism between the propagation speed of tribrachial flame and local flow velocity stabilized the lifted flames. At relatively high initial temperatures, either autoignited lifted flames having tribrachial edge or autoignited lifted flames with mild combustion existed regardless of the Schmidt number of fuel. The adiabatic ignition delay time played a crucial role for the stabilization of autoignited flames. Especially, heat loss during the ignition process should be accounted for, such that the convection time, defined by the autoignition height divided by jet velocity was correlated well with the square of the adiabatic ignition delay time for the critical autoignition conditions. The liftoff height was also correlated well with the square of the adiabatic ignition delay time.
For the non-autoignited lifted flames for relatively low temperature, the existence of lifted flame depended on the Schmidt number of fuel, such that only the fuels with Sc > 1 exhibited stationary lifted flames, similar to the case with atmospheric temperature. The balance mechanism between the propagation speed of tribrachial flame and local flow velocity stabilized the lifted flames. At relatively high initial temperatures, either autoignited lifted flames having tribrachial edge or autoignited lifted flames with mild combustion existed regardless of the Schmidt number of fuel. The adiabatic ignition delay time played a crucial role for the stabilization of autoignited flames. Especially, heat loss during the ignition process should be accounted for, such that the convection time, defined by the autoignition height divided by jet velocity was correlated well with the square of the adiabatic ignition delay time for the critical autoignition conditions. The liftoff height was also correlated well with the square of the adiabatic ignition delay time.
목차
ABSTRACT
1. 서론
2. 실험 장치 및 방법
3. 결과 및 토의
4. 결론
후기
참고문헌
참고문헌 (0)
참고문헌 신청함께 읽어보면 좋을 논문
논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!
-
일산화탄소/수소 혼합기의 가열된 동축류 제트에서 자발화된 층류 부상화염의 특성
대한기계학회 논문집 B권
2012 .06
-
Experimental Study on Laminar Lifted Methane Jet Flame Diluted with Nitrogen and Helium
KOSCO SYMPOSIUM 논문집
2014 .11
-
자발화 온도범위에서 층류 부상화염의 천이특성
한국자동차공학회 춘 추계 학술대회 논문집
2006 .11
-
A Study on Laminar Lifted Jet Flames for Diluted Methane in Co-flow Air
한국연소학회지
2015 .09
-
Numerical Modeling of Turbulent Nonpremixed Lifted Flames
Journal of Mechanical Science and Technology
2004 .01
-
역확산화염에서 부상 상태의 진동현상에 관한 연구
KOSCO SYMPOSIUM 논문집
2006 .10
-
자발화된 층류 부상화염에 대한 점화지연시간의 영향
대한기계학회 논문집 B권
2011 .10
-
난류 비 예혼합 부상 화염장의 해석
한국자동차공학회 Symposium
2002 .11
-
일반 및 무중력에서 부상 화염의 진동 특성에 관한 연구
대한기계학회 춘추학술대회
2002 .05
-
부상화염에서 예혼합화염과 삼지화염의 천이적 거동(Ⅰ)
대한기계학회 논문집 B권
2005 .03
-
LIFTED FLAME STABILIZATION IN JETS
KOREA-JAPAN Joint Seminar on Particle Image Velocimetry
2006 .09
-
좁은 채널 내부의 수직 혼합 경계층에 형성된 메탄-공기 에지-화염의 안정화 기초 실험
대한기계학회 논문집 B권
2009 .07
-
음향 가진된 프로판 비예혼합 제트 화염의 부상 거동에 대한 실험적 연구
대한기계학회 논문집 B권
2004 .05
-
부상화염 내부의 온도분포
KOSCO SYMPOSIUM 논문집
2014 .11
-
자발화된 메탄 부상화염에 대한 수소 첨가의 영향
대한기계학회 논문집 B권
2012 .01
-
Experimental Study on Laminar Lifted Methane Jet Flame Diluted with Nitrogen and Helium
KOSCO SYMPOSIUM 논문집
2014 .11
-
상승된 압력에서 층류 제트 부상화염의 에지화염속도 측정기법 개발
KOSCO SYMPOSIUM 논문집
2019 .05
-
A numerical study of the coflow dilution effect on the flame characteristics of autoignited laminar lifted methane/jet flames
KOSCO SYMPOSIUM 논문집
2019 .11
-
부상화염에서 예혼합화염과 삼지화염의 천이적 거동 (Ⅱ)
대한기계학회 논문집 B권
2005 .03
-
음향 가진된 층류 비예혼합 분류 화염에서 화염에지의 거동특성
대한기계학회 춘추학술대회
2009 .11
이 논문의 저자 정보
이 논문과 함께 이용한 논문
최근 본 자료
댓글(0)
0
UCI(KEPA) : I410-ECN-0101-2010-431-002483629