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## Effect of contamination on wind turbine airfoils performance

### Michał Wypniewski

#### Abstract

This paper’s purpose is to describe the influence of airfoils state surface on their performance and machines’ efficiency, especially on wind turbines’. Wind tunnel testing carried out at Warsaw University of Technology, at Mechanical, Energetic and Aeronautical Faculty in Poland included the RDTW 1001 and RDTW 1002 airfoils for KW–size wind turbines both with and without leading edge roughness. Airfoils efficiency depends above all on work conditions. Such factors as rain, snow, salt or bugs are only a few of the countless negative factors which distort the results of the tests. These have a great impact on the performance in case of wind turbines because of the most common in this field laminar airfoils. Their characteristics prevent them from working faultless unless their surfaces are smooth and geometry is well-shaped. The carried out research also delivered methods for making airfoils sensitivity on leading edge roughness less harmful for their performance. The most adequate example is RisØ-B1 airfoil family for MW-size wind turbines. Its performance was compared with NACA’s 4418 – classic aircraft airfoil and NACA’s 63-418 – laminar airfoil. In case of RisØ- B1 an insignificant difference in performance when comparing smooth and rough surface has been noticed, whilst the performance of the other airfoils significantly decreased. Performance of RDTW airfoils with leading edge roughness also decreased but became more stable. The kind of roughness used in tests caused a drop in maximum lift of 5 % (1001) and 8% (1002). In case of 1002 much increase of drag was observed. The results of the research confirm the thesis that the leading edge roughness has a pejorative influence on wind turbine, plane or glider airfoils performance. The difference between these three is work conditions and because of them, the level of changes in performance can be more or less severe. Those changes can be predicted and eliminated but the possibility of their appearance has to be noticed in an early stage of the project to avoid additional costs and save time.
Diploma type
Engineer's / Bachelor of Science
Diploma type
Engineer's thesis
Author
Michał Wypniewski (FPAE) Michał Wypniewski,, Faculty of Power and Aeronautical Engineering (FPAE)
Title in Polish
Wpływ zanieczyszczeń na osiągi profili turbin wiatrowych
Supervisor
Konrad Gumowski (FPAE/IAAM) Konrad Gumowski,, The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)Faculty of Power and Aeronautical Engineering (FPAE)
Certifying unit
Faculty of Power and Aeronautical Engineering (FPAE)
Affiliation unit
The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)
Study subject / specialization
, Lotnictwo i Kosmonautyka
Language
(pl) Polish
Status
Finished
Defense Date
27-09-2016
Issue date (year)
2016
Pages
38
Internal identifier
MEL; PD-3820
Reviewers
Konrad Gumowski (FPAE/IAAM) Konrad Gumowski,, The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)Faculty of Power and Aeronautical Engineering (FPAE) Jacek Szumbarski (FPAE/IAAM) Jacek Szumbarski,, The Institute of Aeronautics and Applied Mechanics (FPAE/IAAM)Faculty of Power and Aeronautical Engineering (FPAE)
Keywords in Polish
profil, turbiny wiatrowe, zanieczyszczenia, chropowatość powierzchni
Keywords in English
airfoil, wind turbines, contamination, leading edge roughness
Abstract in Polish
File
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Praca inzynierska Michal Wypniewski.pdf
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Local fields
Identyfikator pracy APD: 13785

Uniform Resource Identifier
https://repo.pw.edu.pl/info/bachelor/WUTbf23488d0fd940719d107e214d0c945b/
URN
urn:pw-repo:WUTbf23488d0fd940719d107e214d0c945b

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