Abstract
The rapid development of the wind turbine industry has brought with it increasingly serious environmental problems regarding noise generated by turbines. Therefore, wind turbine noise has become an important research topic to solve the larger issue of environmental noise. Using computational fluid dynamics software and a large eddy simulation turbulence model, the aerodynamic noise created by a 3.0-MW high-power double blade is calculated using the FW-H acoustic model. The discrete characteristics of the tip noise spectrum are determined according to the static pressure and flow field distribution of the double blade. Based on the IEC standard, a monitoring point is selected as the noise-testing index of the fan, and the sound pressure level at this point is determined. The most appropriate location to install the wind turbine is determined based on restrictions on the decibel levels for wind farms. This method can be used not only to study the aeroacoustic characteristics of the blade, but also for guidance regarding the suitable noise level in the installation area of the wind turbines.
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