Evaluation of Combustion Noise Scaling Laws by an Optical Technique
Evaluation of Combustion Noise Scaling Laws by an Optical Technique
复制标题
通过光学技术评估燃烧噪声缩放定律
DOI：
10.2514/3.49775
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发表时间：
1974
期刊：
影响因子：
2.5
通讯作者：
J. Handley
中科院分区：
文献类型：
--
作者：
B. Shivashankara;W. Strahle;J. Handley
本文描述了一项调查，以验证开放预混湍流火焰的声光发射之间存在一对一的对应关系。利用a)直接时间轨迹，b)互相关技术和c)光谱分析，比较了声压和光辐射发射强度的时间导数。利用光学测量对燃烧噪声标度规律进行了评价，进一步证实了这种相关性的存在。这些规律与现有的声压测量得到的标度规律进行了比较。从这些结果中得出了关于燃烧噪声来源的重要结论。
An investigation which was conducted to verify the existence of a one-to-one correspondence between the acoustic and optical emissions from open premixed turbulent flames is described. The sound pressure and the time derivative of the emission intensity of light radiation have been compared using a) direct time traces, b) a cross-correlation technique, and c) spectral analysis. Further substantiation to the existence of the correlation has been provided by evaluating combustion noise scaling laws using optical measurements. These laws have been compared with existing scaling laws obtained from sound pressure measurements. Important conclusions regarding the origin of combustion noise have been drawn from these results.