한국가스학회지 (Journal of the Korean Institute of Gas)
- 제12권2호
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- Pages.77-84
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- 2008
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- 1226-8402(pISSN)
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- 2713-6922(eISSN)
노즐 직경 변화가 층류부상화염 거동에 미치는 영향
Effects of Fuel Nozzle Diameter in the Behavior of Laminar Lifted Flame
- 김태권 (계명대학교 기계자동차공학부) ;
- 엄현수 (계명대학교 일반대학원) ;
- 김경호 (계명대학교 저공해자동차부품기술개발센터) ;
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하지수
(계명대학교 에너지환경과학과) ;
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박정
(부경대학교 기계공학부)
- Kim, Tae-Kwon (School of Mechanical & Automotive Engineering, Keimyung University) ;
- Um, Hyen-Soo (Graduate Schools, Keimyung University) ;
- Kim, Kyung-Ho (Center for Automotive Parts Technology, Keimyung University) ;
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Ha, Ji-Soo
(Environmental Science, Keimyung University) ;
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Park, Jeong
(School of Mechanical Engineering, Pukyong National University)
- 발행 : 2008.06.30
초록
제트상사성 이론에 의해 잘 이해되어온 층류부상화염의 부상화염 거동에 대해 연료 노즐 직경 변화 효과를 통한 부력효과의 중요성을 밝히기 위한 실험적 연구를 수행하였다. 부력 효과를 평가하기 위해 연료노즐 직경을
Experimental study was conducted to clarify the importance of buoyancy effects in laminar lifted flames which have been well understood by cold jet similarity theory. To evaluate buoyancy effects, lifted flame behaviors were systematically observed in methane and propane lifted flames diluted with He as changing the fuel nozzle diameter from 0.1 to 6 mm. Important physical parameters such as fuel strength, flame stretch and flame curvature, which were derived through simple physical scaling laws, were estimated. It is experimentally proven that buoyancy effects are important in relatively large fuel nozzle diameter and large fuel dilution with He. The results of Chen et al., which displayed the existence of stably lifted flames for 0.5