A function improving tip loss correction of blade-element momentum theory for wind turbines
| Autor: | Wei Zhong, Tongguang Wang, Wen Zhong Shen, Wei Jun Zhu |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | International Journal of Sustainable Energy, Vol 43, Iss 1 (2024) |
| Druh dokumentu: | article |
| ISSN: | 14786451 1478-646X 1478-6451 |
| DOI: | 10.1080/14786451.2024.2352794 |
| Popis: | ABSTRACTTip loss correction is necessary for all aerodynamic computations based on the blade-element momentum theory (BEMT) that plays an essential role in wind turbine design. Glauert tip-loss correction, which is most widely used, assumes the rotor is lightly loaded and thus lose some accuracy for modern wind turbines that are highly loaded. In the present work, a new g-function involving the rotor’s thrust-coefficient is introduced, which connects the tip loss correction with the rotor’s load condition and reduces the error of the tip loss correction. Computational tests are performed on two rotors that are distinct in size and tip shape. The new g-function results in good consistency between the computed forces and the reference data, exhibiting excellent role in improving the accuracy of the BEMT computations. In general, the new g-function combines good effectiveness and applicability, and thus has great potential for engineering applications. |
| Databáze: | Directory of Open Access Journals |
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