Our understanding of aerodynamic noise generation has increased in recent years and has resulted in the development of prediction methods for the noise power output and practical methods of noise reduction from jets, fans and flow in ducts. The paper reviews these developments and, in particular, concentrates on the noise generated in turbulent flows. Lighthill's theory of aerodynamic noise is discussed with extensions and applications proposed by the author and others. Some recent results are compared with experiments on jets at various speeds and temperatures.
Aerodynamic noise - its theory and practice
1976
7 Seiten, 2 Quellen
Conference paper
English
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