Characterization of Temperature and Soot Volume Fraction in Laminar Premixed Flames: Laser Absorption/Extinction Measurement and Two-Dimensional Computational Fluid Dynamics Modeling
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摘要We performed a comprehensive laser absorption/extinction study of temperature and soot volume fraction (SVF) in C2H4/air premixed sooting flames. Laser-absorption two-line thermometry at 2.5 mu m provided a temperature uncertainty of 50 K compared with that of 90 K using conventional thermocouples. Laser extinction of soot at 633 nm was first validated against the previous measurements using laser-induced incandescence. All of the measurements were conducted at four representative C2H4 flame conditions (equivalence ratio Phi = 1.78, 1.95, 2.14, and 2.38). In addition, a CFD (computational fluid dynamics) framework coupling a skeletal mechanism (56 species and 428 reactions) with the Moss-Brookes model was developed for interpreting the experimental data. The current CFD simulations well predicted the temperature and SVF distribution along the centerline of flame. It is of interest to observe that the SVF depends on the Reynolds number of reactants by investigating the SVFs at different heights above the burner for the varied flow rates and equivalence ratios.
著者Ma LH, Ning HB, Wu JJ, Cheong KP, Ren W
期刊名稱Energy and Fuels
出版年份2018
月份12
卷號32
期次12
出版社AMER CHEMICAL SOC
頁次12962 - 12970
國際標準期刊號0887-0624
電子國際標準期刊號1520-5029
語言英式英語
Web of Science 學科類別Energy & Fuels;Engineering, Chemical;Energy & Fuels;Engineering

上次更新時間 2021-09-05 於 01:26