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首页> 外文期刊>Journal of Heat Transfer >Spectral Radiation Properties of Partially Premixed Turbulent Flames
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Spectral Radiation Properties of Partially Premixed Turbulent Flames

机译：部分预混湍流火焰的光谱辐射特性

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摘要

Instantaneous spectral radiation intensities of three standard turbulent jet flames were measured and simulated in this study. In the simulation, a recently developed technique was adapted to reconstruct the local integral time and length scales in the flames. The simulated radiation properties, including mean, root mean square, probability density function, power spectral density and autocorrelation coefficient, were generally within 10% of the, measurements. The macro time and length scales were found to increase with increasing distance from the axis and the radial averages of these scales were found to increase with down stream distance but decrease with Reynolds number.
机译：在这项研究中，测量并模拟了三种标准湍流喷射火焰的瞬时光谱辐射强度。在模拟中，最近开发的技术适用于重建火焰中的局部积分时间和长度尺度。模拟的辐射特性（包括均值，均方根，概率密度函数，功率谱密度和自相关系数）通常在测量值的10％以内。发现宏观时间和长度尺度随距轴的距离增加而增加，并且这些尺度的径向平均值随下游距离增加而随雷诺数减少。

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