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A Study of Pollutant Emission Characteristics of Partially Premixed Turbulent Jet Flames

机译:部分预混湍流射流火焰的污染物排放特性研究

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摘要

We measured emission indices for NO_x, CO, and HC for turbulent partially premixed flames formed by injecting rich methane/air mixtures through a central burner tube into a co-flow of air. The operating conditions included a broad range of burner tube equivalence ratios(φ_b) including the limiting cases of diffusion and stoichiometric premixed flames. At sufficiently high levels of partial premixing, a double flame structure consisting of a rich premixed inner flame and an outer diffusion flame is established similar to that previously observe din laminar flames.
机译:我们测量了湍流的部分预混火焰的NO_x,CO和HC排放指数,这些部分预混火焰是通过将浓甲烷/空气混合物通过中央燃烧器管注入空气同流而形成的。操作条件包括大范围的燃烧器管当量比(φ_b),包括扩散和化学计量的预混火焰的极限情况。在足够高的部分预混水平下,类似于先前观察到的层流火焰,建立了由浓预混内火焰和外扩散火焰组成的双火焰结构。

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