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首页> 美国政府科技报告 >Study on Turbulent Fluctuations in Diffusion Flames Using Laser InducedFluorescence (Studie van Turbulente Fluctuaties in Diffusievlammen met Gebruik van Laser Geinduceerde Fluorescentie)
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Study on Turbulent Fluctuations in Diffusion Flames Using Laser InducedFluorescence (Studie van Turbulente Fluctuaties in Diffusievlammen met Gebruik van Laser Geinduceerde Fluorescentie)

机译：利用激光诱导荧光研究扩散火焰中的湍流波动（在扩散火焰中研究湍流波动的Gebruik van Laser Geinduceerde Fluorescentie）

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Even with the fastest computers of the day, detailed chemistry modelling can onlybe applied to turbulent flames with simple geometry, and not to flames in industrial furnaces which generally have complex geometries. The power of the laboratory scale turbulent flames we studied is aobut 25 kW, compared to flame powers used in industry often ranging from 100 kW to several MW. In the Heat Transfer Group, several researchers collaborate to provide a description as complete as possible of turbulent co-current nonpremixed natural gas flames produced by a burner designed in the Heat Transfer Group. In total, we investigated six flames with different conditions. The aims of this study are to provide concentration measurements, including measurements of average concentrations and of quantities describing turbulent fluctuations of the species measured. The effect of turbulence on the concentrations is studied by varying the exit velocities, and the effect of chemistry by varying the exit flow temperature. In addition, we chose to measure NO seeded to the natural gas, to study the mixing of a conserved species by shear layer turbulence. These results uncover the qualities and shortcomings of the current models of turbulent combustion.

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