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dc.contributor.authorLi, Ye
dc.contributor.authorÇalışal, Sander M.
dc.description.abstractDuring the last decade, with rapidly increasing deployment of tidal current turbine prototypes in many countries, a number of failures have been reported. Several of these failures were attributed to the intensive flow fluctuation around the device. As a result, designers had to re-design their devices although no initial design stage approach is available yet. In this paper, we derive a formulation to quantify the relationship between the power output fluctuation and the flow fluctuation with a newly defined power fluctuation coefficient. Particularly, it includes various turbine design parameters. It suggests that the turbine fluctuation coefficient is proportional to the solidity and the square root of the tip speed ratio. For a curved-blade turbine, the relationship between the blade span length and the maximum radius is critical. Furthermore, we present a procedure to identify the impact of wake vortices on the turbine blade, from which they shed. The results obtained from both the formulation and the above procedure show good agreement with those obtained from the experimental test and expensive numerical tools, but the current formulation and procedure cost much less. They are expected to provide guidance and assistance to turbine design at the initial design stage and can also be applicable to the vertical axis wind turbine design. Published by AIP Publishing.en_US
dc.description.sponsorshipThousand Talents Program, National Natural Science Foundation of China [51479114]; MIITC Floating Support platform project [GHME2014ZC01, 201622]en_US
dc.description.sponsorshipThe authors gratefully acknowledge the support of Thousand Talents Program, National Natural Science Foundation of China (51479114), the platform construction of ocean energy comprehensive supporting service (2014) (GHME2014ZC01), and High-Tech Ship Research Projects Sponsored by MIITC Floating Support platform project (201622).en_US
dc.publisherAmer Inst Physicsen_US
dc.relation.ispartofJournal on Renewable and Sustainable Energyen_US
dc.subject[No Keywords]en_US
dc.titleOn flow fluctuation's impact on the performance of vertical axis turbines-A potential flow analysisen_US
dc.departmentMühendislik Fakültesi, Makine Mühendisliği Bölümüen_US
dc.department-temp[Li, Ye] Shanghai Jiao Tong Univ, Dept Naval Architecture & Ocean Engn, Shanghai, Peoples R china; [calisal, Sander M.] Univ British columbia, Dept Mech Engn, Vancouver, Bc V6T1Z4, canada; [calisal, Sander M.] Piri Reis Univ, Dept Mech Engn, Istanbul, Turkeyen_US
dc.contributor.institutionauthorÇalışal, Sander M.
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US

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