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      저자 : 데이비드 클레이튼(David B. Clayton) (검색결과 3 건)
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      • Characteristics of Edge Flames for Premixed Flames in a Counterflow Slot Burner

        David B. Clayton(데이비드 클레이튼),Min Suk Cha(차민석),Paul D. Ronney(폴 로니) 한국연소학회 2006 KOSCOSYMPOSIUM논문집 Vol.- No.-

        The propagation rates (Uedge) of various premixed edge-flames were measured as a function of global strain rate (σ), mixture strength, and Lewis number (Le). Using a counterflow slot-jet burner with electrical heaters at each end, both advancing (positive Uedge) and retreating (negative Uedge) edges can be studied as they propagate along the long dimension of the burner. Preliminary results are presented for single and twin premixed hydrocarbon edge-flames in terms of the effects on Uedge. A low-σ extinction limit has been discovered for all mixtures tested but further analysis is necessary for full characterization since sufficiently high-σ leads to an apparent stability limit. Propagation rates clearly show a strong dependence on Le. Future work will focus on completing the premixed hydrocarbon edge-flame analysis and include investigations into non-premixed edge-flames and edge-flames composed of fuels such as hydrogen (H₂) with significantly lower Le.

      • Edge Flame propagation for Twin Premixed Counterflow Slot Burner

        David B. Clayton(데이비드 클레이튼),Min Suk Cha(차민석),Paul D. Ronney(폴 로니) 한국연소학회 2006 KOSCOSYMPOSIUM논문집 Vol.- No.-

        Propagation rates (Uedge) of various premixed, twin edge-flames were measured as a function of global strain rate (σ), mixture strength, and Lewis number (Le). Using a counterflow slot-jet burner with electrical heaters at each end, both advancing (positive Uedge) and retreating (negative Uedge) edge-flames can be studied as they propagate along the long dimension of the burner. Experimental results are presented for premixed methane/air twin flames in terms of the effects of σ on Uedge- Both low-σ and high-σ extinction limits were discovered for all mixtures tested. As a result, the domain of edge-flame stability was obtained in terms of heat loss factor and normalized flame thickness, and comparison with the numerical result of other researchers was also made. For low (CH₄/O₂/CO₂) and high (C₃H?/air) Lewis number cases, propagation rates clearly show a strong dependence on Le.

      • KCI등재

        대향류 슬롯 버너에서 이중 예혼합 선단화염의 전파특성

        데이비드 클레이튼(David B. Clayton),차민석(Min Suk Cha),폴 로니(Paul D. Ronney) 한국연소학회 2009 한국연소학회지 Vol.14 No.1

        Propagation rates (Uedge) of various premixed, twin edge-flames were measured as a function of global strain rate (σ), mixture strength, and Lewis number (Le). Using a counterflow slot-jet burner with electrical heaters at each end, both advancing (positive Uedge) and retreating (negative Uedge) edge-flames can be studied as they propagate along the long dimension of the burner. Experimental results are presented for premixed methane/air twin flames in terms of the effects of σ on Uedge. Both low-σ and high-σ extinction limits were discovered for all mixtures tested. As a result, the domain of edge-flame stability was obtained in terms of heat loss factor and normalized flame thickness, and comparison with the numerical result of other researchers was also made. For low (CH₄/O₂/CO₂) and high (C₃H?/air) Lewis number cases, propagation rates clearly show a strong dependence on Le.

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