한국신재생에너지학회:학술대회논문집
- 2009.06a
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- Pages.504-507
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- 2009
Characteristics of Low Frequency Aero-acoustic Noise Radiation for a Wind Turbine Generator of NREL Phase VI
NREL Phase VI 풍력발전기 저주파 소음방사 특성
Abstract
The purpose of this work is to predict the low frequency aero-acoustic noise generated from the horizontal axis wind turbine, NREL Phase VI using large eddy simulation and Ffowcs-Williams and Hawkings model provided in the commercial code, FLUENT. Calculated aerodynamic performances such as shaft torque and power are compared with experimentally measured value. Performance results show a good agreement with experimental data within about 0.8%. If the distance by two times is changed from 32D to 64D toward the downstream region, sound pressure level is reduced by about 6.4dB.
Keywords