Abstract
The classical blade-element/momentum (BE/M) method, which is used together with different types of corrections (e.g. the Prandtl or Glauert tip correction), is today the most basic tool in the design of wind turbine rotors. However, there are other classical techniques based on a combination of the blade-element approach and lifting-line (BE/LL) methods, which are less used by the wind turbine community. The BE/LL method involves different interpretations for rotors with finite or infinite numbers of blades and different assumptions with respect to the optimum circulation distribution. In the present study we compare the performance and the resulting design of the BE/M method by Glauert [1] and the BE/LL method by Betz [2] for finite as well as for infinite-bladed rotors, corrected for finiteness through the tip correction. In the first part of the paper, expressions are given for the optimum design, including blade plan forms and local pitch distributions. The comparison shows that the resulting geometry of the rotor depends on the method used, but that the differences mainly exist in the inner part of the blade and at relatively small tip speed ratios (TSR
Original language | English |
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Article number | 022020 |
Book series | Journal of Physics: Conference Series (Online) |
Volume | 753 |
Number of pages | 10 |
ISSN | 1742-6596 |
DOIs | |
Publication status | Published - 2016 |
Event | The Science of Making Torque from Wind 2016 - Technische Universität München (TUM), Munich, Germany Duration: 5 Oct 2016 → 7 Oct 2016 Conference number: 6 https://www.events.tum.de/?sub=29 |
Conference
Conference | The Science of Making Torque from Wind 2016 |
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Number | 6 |
Location | Technische Universität München (TUM) |
Country/Territory | Germany |
City | Munich |
Period | 05/10/2016 → 07/10/2016 |
Internet address |