Abstract
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 for the whole operating conditions of various wind speeds using large eddy simulation a nd Ffowcs-Williams and Hawkings model provided in the commercial code, FLUENT. Because there is no experimental data about wind turbine noise, we first of all com pared aerodynamic performance such as shaft torque and power with experimentally measured value. Performance results show a good agreement with experimental dat a within about 0.8%. As the wind speed increases, the overall sound pressure level and the sound pressure level by the quadrupole and dipole source show a increasing ten dency. Also, sound pressure level is proportional to r -2 in the near field and r -1 in the far field according to the increase of distance from the center of hub of wind turbine . According to 2 times increase of distance, sound pressure level is reduced by about 6dB.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callMore From: Journal of the Korean Society of Marine Engineering
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
