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http://dx.doi.org/10.7837/kosomes.2014.20.1.104

Design and Performance Evaluation of a 10kW Scale Counter-Rotating Wind Turbine Rotor  

Hoang, Anh Dung (Graduate School, Mokpo National Maritime University)
Yang, Chang-Jo (Department of Marine System Engineering, Mokpo National Maritime University)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.20, no.1, 2014 , pp. 104-112 More about this Journal
Abstract
The counter-rotating approach on wind turbine has been recently put in interest for its certain advantages in both design and performance. This paper introduces a study on a counter-rotating wind turbine designed and modeled using NREL airfoils S822 and S823. The aims of the study is to evaluate and discover the performance of the counter-rotating system, and compares to that of single rotor turbine of same design using numerical simulation. The results show higher performance of the counter-rotating system compared with single rotor case at TSR 3 to 5 but lower performance at higher TSR. This is due to the interaction between upstream and downstream rotors. Thus, the counter-rotating turbine is more efficient at low rotor rotational speed.
Keywords
CFD; Wind turbine; Horizontal axis wind turbine(HAWT); Counter-rotating wind turbine(CRWT); Energy; S822; S823;
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