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Information × Registration Number 0225U004793, (0124U004405) , R & D reports Title Scientific and Technical Principles for Reducing Aerodynamic Noise in Wind Turbine Blades popup.stage_title Визначення науково-технічних принципів зниження аеродинамічного шуму лопаті вітрової турбіни Head Aleksieienko Serhii V., Доктор технічних наук Registration Date 18-12-2025 Organization Dnipro University of Technology popup.description1 The main goal is to study and develop the scientific and technical principles of reducing the level of aerodynamic noise of small and medium-sized wind turbines, which occurs as a result of the formation of vortex emissions from the leeward side of the wind turbine blade and their further interaction with the trailing edge of the blade. popup.description2 Within the reported stage of the research and development project, a comprehensive set of numerical and experimental studies was carried out, aimed at reducing the aerodynamic noise of wind turbine blade segments. The main focus was placed on investigating the noise generation mechanisms in the trailing-edge region of the blade associated with the development of unsteady vortex structures, as well as on identifying effective approaches for controlling these processes. A detailed investigation of the noise characteristics of the baseline aerodynamic profile NACA 0012 was conducted over a wide range of inflow velocities and angles of attack, taking into account the rotational effects of the blade segment. The obtained experimental data made it possible to form a reference acoustic dataset that can be used for further comparative studies and for the verification of numerical methods for aerodynamic noise modelling. Within the reported stage, the influence of trailing-edge modifications in the form of periodic serrations, stepped features, and internal slot channels on the level and spectral structure of noise radiation was investigated. It was shown that the application of such design solutions leads to a reduction in the overall aerodynamic noise level, as well as to a decrease in sound pressure level by 2–5 dB in the low- and mid-frequency ranges at moderate inflow velocities and small angles of attack. At the same time, it was established that the noise reduction efficiency strongly depends on the flow regime, which allowed the identification of operating conditions under which the proposed solutions are most effective. The obtained results provide a scientific basis for further optimization of blade designs for small and medium-sized wind turbines, contribute to the development of low-noise technologies in wind energy, and support the improvement of environmental safety and social acceptance of wind energy installations. Product Description popup.authors Sudakov Andrey Konstantinovich Liliia V. Nakashydze Andriy̆ Y. Dreus Dmytro V. Harkavenko Vitalii A. Derbaba Yevhen Y. Shcherbyna popup.nrat_date 2025-12-18 Close