A Dynamic Rotor Vertical-Axis Wind Turbine with a Blade Transitioning Capability

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dc.contributor.author Antar, Elie
dc.contributor.author El Cheikh, Amne
dc.contributor.author Elkhoury, Michel
dc.date.accessioned 2021-07-13T10:13:39Z
dc.date.available 2021-07-13T10:13:39Z
dc.date.copyright 2019 en_US
dc.date.issued 2021-07-13
dc.identifier.issn 1996-1073 en_US
dc.identifier.uri http://hdl.handle.net/10725/12938
dc.description.abstract This work presents an optimized design of a dynamic rotor vertical-axis wind turbine (DR VAWT) which maximizes the operational tip-speed ratio (TSR) range and the average power coefficient (Cp) value while maintaining a low cut-in wind velocity. The DR VAWT is capable of mimicking a Savonius rotor during the start-up phase and transitioning into a Darrieus one with increasing rotor radius at higher TSRs. The design exploits the fact that with increasing rotor radius, the TSR value increases, where the peak power coefficient is attained. A 2.5D improved delayed detached eddy simulation (IDDES) approach was adopted in order to optimize the dynamic rotor design, where results showed that the generated blades’ trajectories can be readily replicated by simple mechanisms in reality. A thorough sensitivity analysis was conducted on the generated optimized blades’ trajectories, where results showed that they were insensitive to values of the Reynolds number. The performance of the DR VAWT turbine with its blades following different trajectories was contrasted with the optimized turbine, where the influence of the blade pitch angle was highlighted. Moreover, a cross comparison between the performance of the proposed design and that of the hybrid Savonius–Darrieus one found in the literature was carefully made. Finally, the effect of airfoil thickness on the performance of the optimized DR VAWT was thoroughly analyzed. en_US
dc.language.iso en en_US
dc.title A Dynamic Rotor Vertical-Axis Wind Turbine with a Blade Transitioning Capability en_US
dc.type Article en_US
dc.description.version Published en_US
dc.author.school SOE en_US
dc.author.idnumber 201705688 en_US
dc.author.idnumber 200403272 en_US
dc.author.department Industrial And Mechanical Engineering en_US
dc.relation.journal Energies en_US
dc.journal.volume 12 en_US
dc.journal.issue 8 en_US
dc.article.pages 1446 en_US
dc.keywords Dynamic rotor en_US
dc.keywords Vertical-axis wind turbine en_US
dc.keywords Savonius–Darrieus variable configuration en_US
dc.identifier.doi https://doi.org/10.3390/en12081446 en_US
dc.identifier.ctation Antar, E., El Cheikh, A., & Elkhoury, M. (2019). A dynamic rotor vertical-axis wind turbine with a blade transitioning capability. Energies, 12(8), 1446. en_US
dc.author.email amne.elcheikh@lau.edu.lb en_US
dc.author.email mkhoury@lau.edu.lb en_US
dc.identifier.tou http://libraries.lau.edu.lb/research/laur/terms-of-use/articles.php en_US
dc.identifier.url https://www.mdpi.com/1996-1073/12/8/1446 en_US
dc.orcid.id https://orcid.org/0000-0003-0459-8145 en_US
dc.orcid.id https://orcid.org/0000-0002-2732-4190 en_US
dc.author.affiliation Lebanese American University en_US

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