 Optimal design of protuberant blades for small variable-speed horizontal axis wind turbine-experiments and simulationsChang-Chi Huang, Chi-Jeng Bai, Y.C. Shiah and Yu-Jen Chen Energy, 2016, vol. 115, issue P1, 1156-1167 Abstract: In our previous study, it has been shown that the use of protuberances covering the whole leading edges of B-blades will enhance the performance of horizontal axis wind turbine (HAWT) under low speed rotations. However, a great loss of performance shall occur after a critical tip speed ratio is reached. The research aims to optimize the protuberance design of HAWT blades for the system to gain optimal performance under low speed rotations, whereas no significant drop of performance happens at high tip speed ratios. The optimization study was performed not only for baseline blades but also for those designed by the blade element momentum theory. For verifications, wind tunnel experiments were carried out to provide comparative data; additionally, numerical simulations were also conducted to further visualize the flow fields. The results show that the optimal leading-edge protuberances would significantly increase the HAWT performance under low speed rotations, yet no serious performance payback occurs at high tip speed ratios. Keywords: Small variable-speed HAWT; Optimization of leading-edge protuberances (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:115:y:2016:i:p1:p:1156-1167 DOI: 10.1016/j.energy.2016.09.100 Access Statistics for this article Energy is currently edited by Henrik Lund and Mark J. Kaiser More articles in Energy from Elsevier |
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