Efficiency of operation of wind turbine rotors optimized by the Glauert and Betz methods

The models of two types of rotors with blades constructed using different optimization methods are compared experimentally. In the first case, the Glauert optimization by the pulsed method is used, which is applied independently for each individual blade cross section. This method remains the main a...

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Bibliographic Details
Published in:Technical physics 2015-11, Vol.60 (11), p.1632-1636
Main Authors: Okulov, V. L., Mikkelsen, R., Litvinov, I. V., Naumov, I. V.
Format: Article
Language:English
Subjects:
Air-turbines
Classical and Continuum Physics
Comparative analysis
Gases and Liquids
Methods
Physics
Physics and Astronomy
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Summary:The models of two types of rotors with blades constructed using different optimization methods are compared experimentally. In the first case, the Glauert optimization by the pulsed method is used, which is applied independently for each individual blade cross section. This method remains the main approach in designing rotors of various duties. The construction of the other rotor is based on the Betz idea about optimization of rotors by determining a special distribution of circulation over the blade, which ensures the helical structure of the wake behind the rotor. It is established for the first time as a result of direct experimental comparison that the rotor constructed using the Betz method makes it possible to extract more kinetic energy from the homogeneous incoming flow.
ISSN:1063-7842
1090-6525
DOI:10.1134/S1063784215110237