Low frequency acoustic emissions from large horizontal axis wind turbinesAvailable test data and theoretical predictions of LF noise from large wind turbines of the type to be used for energy generation are briefly summarized. The main LF noise sources are identified as tower-wake/blade interactions and rotor-plane inflow gradients. Sound-pressure time histories, measured and calculated narrow-band and rotational noise spectra, and noise radiation patterns for the WTS-4 and WWG-0600 wind turbines are presented graphically.
Document ID
19910043633
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Hubbard, Harvey H. (Planning Research Corp. Hampton, VA, United States)
Shepherd, Kevin P. (NASA Langley Research Center Hampton, VA, United States)
Date Acquired
August 14, 2013
Publication Date
January 1, 1989
Subject Category
Acoustics
Meeting Information
Meeting: International Conference on Noise Control Engineering