Total number
Full text
Total number
Full text
Number of local repositories
Full text
0225U004793,
(0124U004405)
,
Scientific and Technical Principles for Reducing Aerodynamic Noise in Wind Turbine Blades
Визначення науково-технічних принципів зниження аеродинамічного шуму лопаті вітрової турбіни
Aleksieienko Serhii V., Доктор технічних наук
18-12-2025
Dnipro University of Technology
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.
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.
Sudakov Andrey Konstantinovich
Liliia V. Nakashydze
Andriy̆ Y. Dreus
Dmytro V. Harkavenko
Vitalii A. Derbaba
Yevhen Y. Shcherbyna
2025-12-18
Updated: 2025-12-19
Saving a scientific data set occurs in two stages:
1.) Creating a data set
Enter the name of the set, a brief description of the set (annotation), and click the “Create set” button. After that, a draft data set will be automatically created, which you can save for further work with the set. The system will redirect you to the “Data set information” page.
2.) Filling in the data
On the “Data set information” page, you need to fill in all the fields related to the data set and upload the files.
Please note! Each file is uploaded separately. This is done to ensure the stable operation of the system.
Once you have filled in the information about the scientific data set and added the necessary files, you can save the draft or send the data to the system.
Please note! Once the data has been sent, you cannot change it.
Drafts are necessary for storing the data set and editing it before sending.
All accounts on the NRA website go through a standard registration procedure and are verified. However, in order to obtain additional features, such as publishing open reviews of academic texts, verification by affiliation is required.
To obtain the status “verified”, you must change your primary email address to a corporate one, which is tied to a scientific or educational institution.
For example: user@ukrintei.ua, user@nas.gov.ua
After confirming your corporate email address, your account will be automatically verified by affiliation.
If your email address is corporate, but your account does not have a verification mark, you need to write to us at the email address NRAT@ukrintei.ua. After verification, we will add your address to the database, and your account will be verified.
After completing the verification procedure for affiliation, you can change the primary email address to a convenient one for you, without losing your status during the current verification.
You only need to verify for affiliation once.
* We use corporate addresses from the Unified State Database on Education and the State Register of Scientific Institutions Supported by the State
To search for news published on the official website of NRАT in the “News” section, you need to enter one word, several words, or an exact phrase in the search field. Different terms are separated by spaces.
The search is performed everywhere – in the title and the news text.
For a more comprehensive result, it is recommended to use word stems (parts of words without endings).
When using multiple words for the search, they are combined using one of the logical methods described below.
By default, the logical connector “and” is used. In this case, search results will include all news releases that contain the specified words, even if they are located separately from each other and are in different parts of the text.
Example: Search phrase: OECD report. Search result: all news containing the words “report” and “OECD” in the text and in the title, both together and separately.
If a phrase or phrase is enclosed in quotation marks (“), the results will include all publications where this exact phrase or phrase is found.
Example: Search phrase: “OECD report.” Search result: all news containing the exact phrase “OECD report.”
If you know the publication date of the news or are interested in a specific time frame in which they were published on the website, you can select such a date or date range in the additional field that looks like a calendar. The date is entered in the format year-month-day and confirmed by clicking on the corresponding date in the calendar dropdown. You can enter a date or choose one by browsing through the calendar by months and years. By default, the interval starts from the oldest date (2018-01-23) and ends with the current date.
You can also use one or more hashtags, which are located under the search field on the right side of the “News” page.
Please note: The search for academic texts is carried out in a separate search window at the following link https://nrat.ukrintei.ua/searchdb.
