Noise generation in axial flow fans
β Scribed by C.G. van Niekerk
- Publisher
- Elsevier Science
- Year
- 1966
- Tongue
- English
- Weight
- 817 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0022-460X
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π SIMILAR VOLUMES
Flow distortions at the inlet of an axial flow fan will cause discrete tone noise generation at shaft rotational frequencies. Controlled experiments have been carried out to check the validity of existing theories to predict these tone levels. The results have shown satisfactory agreement at low fre
This paper presents a semi-empirical formula for predicting the noise spectra of axial flow fans in a free field. The basic assumption made in deriving this formula is that sound radiation from an axial flow fan in a free field is primarily due to the fluctuating pressure exerted on the fan blade su