Shape design and numerical analysis on a 1 MW tidal current turbine for the south-western coast of Korea |
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| Affiliation: | 1. Graduate School, Department of Mechanical Engineering, Mokpo National University, Muan-gun 530-729, Jeollanam-do, South Korea;2. Department of Mechanical Engineering, Mokpo National University, Muan-gun 530-729, Jeollanam-do, South Korea;1. Commodities Carbon and Energy, Westpac Institutional Bank, Sydney, Australia;2. Physics Department, University of Newcastle, Callaghan, Australia;1. División de Estudios de Postgrado, Facultad de Ingeniería Eléctrica, Universidad Michoacana de San Nicolás de Hidalgo, Mexico;2. Facultad de Ingeniería, Universidad Autónoma de San Luis Potosí, Mexico;3. Computer Science Department, Instituto Nacional de Astrofísica, Óptica y Electrónica, Mexico;1. University of Antwerp, Department of Chemistry, Groenenborgerlaan 171, B-2020 Antwerp, Belgium;2. Karel de Grote University College, Department of Applied Engineering, Salesianenlaan 30, B-2660 Hoboken, Belgium;1. Department of Electrical & Computer Engineering, Michigan Technological University, Houghton, MI 49931, USA;2. Department of Mechanical and Materials Engineering, Queen''s University, Kingston, Ontario K7L 3N6, Canada;3. Department of Materials Science & Engineering, Michigan Technological University, Houghton, MI 49931, USA |
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| Abstract: | The study concentrates on the shape design and numerical analysis of a 1 MW horizontal axis tidal current turbine (HATCT), which can be applied near the southwest regions of Korea. On the basis of actual tidal current conditions of south-western region of Korea, configuration design of 1 MW class turbine rotor blade is carried out by blade element momentum theory (BEMT). The hydrodynamic performance including the lift and drag forces, is conducted with the variation of the angle of attack using an open source code of X-Foil. The optimized blade geometry is used for Computational Fluid Dynamics (CFD) analysis with hexahedral numerical grids. This study focuses on developing a new hydrofoil and designing a blade with relatively shorter chord length in contrast to a typical TCT blade. Therefore, after a thorough study of two common hydrofoils, (S814 and DU-91-W2-250, which show good performance for rough conditions), a new hydrofoil, MNU26, is developed. The new hydrofoil has a 26% thickness that can be applied throughout the blade length, giving good structural strength. Power coefficient, pressure and velocity distributions are investigated according to Tip Speed Ratio by CFD analysis. As cavitation analysis is also an important part of the study, it is investigated for all the three hydrofoils. Due to the shorter chord length of the new turbine blade in contrast to a typical TCT blade design, a Fluid Structure Interaction (FSI) analysis is also done. Concrete conclusions have been made after comparing the three hydrofoils, considering their performance, efficiency, occurrence of cavitation and structural feasibility. |
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| Keywords: | Horizontal axis tidal current turbine (HATCT) Blade BEMT Hydrofoil Performance |
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