Generation of Combustion Noise
Generation of Combustion Noise
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燃烧噪音的产生
DOI：
10.1121/1.1913076
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发表时间：
1972
影响因子：
2.4
通讯作者：
J. S. Arnold
中科院分区：
文献类型：
--
作者：
J. S. Arnold
分析描述了燃料-空气混合物燃烧时产生的噪声。波动的压力（噪音）被示出时，通过反应区的混合物的热释放速率是随时间变化的结果。支持这一观点的实验证据，并从声学和燃烧的文献中引用。从共同的经验指出了几个说明性的例子。气体和液体燃料的预混合和扩散火焰被认为是，火焰和混合物湍流的作用，造成不同的热释放率和噪音。通过更有效地控制火焰结构和稳定性，似乎存在着显著降低大型燃烧系统（例如喷气发动机）的噪声输出的可能性。
An analytical description is presented for the generation of noise in burning fuel‐air mixtures. Fluctuating pressure (noise) is shown to result when the heat release rate of the mixture passing through the reaction zone is variable with time. Experimental evidence in support of this view is presented and referenced from the literatures of acoustics and combustion. Several illustrative examples from common experience are pointed out. Premixed and diffusion flames of gas and liquid fuels are considered, and the role of flame and mixture turbulence in causing a varying heat release rate and noise is noted. The possibility appears to exist for substantially reducing the noise output of large combustion systems (jet engine, for example) by more effective control of the flame configuration and stability.