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Active control of axial-flow fan noise

✍ Scribed by Lauchle, Gerald C.

Book ID
115508155
Publisher
American Institute of Physics
Year
1997
Tongue
English
Weight
165 KB
Volume
101
Category
Article
ISSN
0001-4966

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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