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首页> 外文会议>The 2001 ASME International Mechanical Engineering Congress and Exposition, 2001, Nov 11-16, 2001, New York, New York >TEMPORALLY RESOLVED RADIATION SPECTRA FROM A SOOTING, TURBULENT POOL FIRE
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TEMPORALLY RESOLVED RADIATION SPECTRA FROM A SOOTING, TURBULENT POOL FIRE

机译：喷出的湍流池火产生的临时分辨的辐射谱

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摘要

Infrared radiation spectra from a 1-m diameter, JP-8-fueled, liquid pool fire in nominally quiescent surroundings have been acquired using a novel IR spectrometer. Data were acquired at a rate of 390 spectra/sec allowing for a time-resolved description of the radiation from the fully turbulent fire plume. Results are discussed in terms of an effective homogeneous pathlength and both gray and nongray spectral models, of which the gray model surprisingly fits the data in the soot-dominated regions of the spectrum more effectively. The results from the gray model are used to provide statistical descriptions of the heat transfer from the fire plume in terms of probability density functions (PDFs) of the effective fire temperature and emissivity.
机译：使用新颖的红外光谱仪已获得了名义上处于静止状态的直径为1 m的，由JP-8燃烧的直径为1 m的液池火的红外辐射光谱。以390个光谱/秒的速率获取数据，以便对来自完全湍流的火羽的辐射进行时间分辨描述。根据有效的均一光程长度以及灰色和非灰色光谱模型对结果进行了讨论，其中灰色模型出人意料地更有效地拟合了以碳烟为主的光谱区域中的数据。灰色模型的结果用于根据有效火温度和发射率的概率密度函数（PDF）提供有关火羽流传热的统计描述。

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