Axial flow fan broad-band noise and prediction
β Scribed by Thomas Carolus; Marc Schneider; Hauke Reese
- Publisher
- Elsevier Science
- Year
- 2007
- Tongue
- English
- Weight
- 922 KB
- Volume
- 300
- 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
Some measurements of discrete tone radiation from an axial flow fan are presented here in the form'of tone directivity. These are explained from the established theory relating them. The effect of cut-off is explained. The measured discrete tone power at blade passing frequency and harmonics are pre