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국내 최대 기계 및 로봇 연구정보
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  • 국내학술지

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    국내학술지 제목 게시판 내용
    제목(국문) 공기 다단 연소기 화염의 NO 발생특성에 관한 연구
    제목(영문) Investigation of NO Formation Characteristics in Multi Staged Air Combustor
    저자 김한석 (H.S.Kim ,한국기계연구원 ) ▷공저자 네트워크 보기
    안국영 (K.Y.Ahn ,한국기계연구원 ) ▷공저자네트워크등록하기
    백승욱 (S.W.Baek ,한국과학기술원 ) ▷공저자 네트워크 보기
    유명종 (M.J.Yu ,(주)카이다스 ) ▷공저자 네트워크 보기
    초록 In this study, a numerical simulation was developed which was capable of predicting the characteristics of NO formation in pilot scale combustor adopting the air-staged burner flame. The numerical calculation was constructed by means of establishing the mathematical models for turbulence, turbulent combustion, radiation and turbulent nitric oxide chemistry. Turbulence was solved with standard κ-ε model and the turbulent combustion model was incorporated using a two step reaction scheme together with an eddy dissipation model. The radiative transfer equation was calculated by means of the discrete ordinates method with the weighted sum of gray gases model for CO2 and H2O. In the NO chemistry model, the chemical reaction rates for thermal and prompt NO were statistically averaged using the β probability density function. The results were validated by comparison with measurements. For the experiment, a 0.2 MW pilot multi-air staged burner has been designed and fabricated. Only when the radiation was taken into account, the predicted gas temperature was in good agreement with the experimental one, which meant that the inclusion of radiation was indispensable for modeling multi-air staged gas flame. This was also true of the prediction of the NO formation, since it heavily depended on temperature. Subsequently, it was found that the multi-air staged combustion technique might be used as a practical tool in reducing the NO formation by controlling the peak flame temperature.
    keyword Radiative Transfer(복사열전달), Multi-Staged Air Flame(다단연소화염), WSGGM(회체가스가중합산모델)
    저널명 대한기계학회논문집 B ▷관련저널보기
    VOL 25
    PAGE 1594-1605
    발표년도 2001
    원문파일 국문다운로드
    • 페이스북아이콘
    • 트위터 아이콘

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