Discrete Frequency Noise Generation From an Axial Flow Fan Blade Row
- 1 March 1970
- journal article
- Published by ASME International in Journal of Basic Engineering
- Vol. 92 (1) , 37-43
- https://doi.org/10.1115/1.3424944
Abstract
An analysis is presented which treats the noise generation from an axial flow fan row by given forces including the effects of a moving medium. The linearization of Euler’s equations to yield tractable problems for fan noise is discussed. The three-dimensional problem is decomposed into several two-dimensional problems. Finally, full details are given of a two-dimensional analysis to predict the amounts of acoustic energy, at the blade passing frequency and its harmonics, radiated up and downstream of a blade row due to its interaction with a neighboring row.Keywords
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