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http://dx.doi.org/10.14775/ksmpe.2019.18.4.076

Computational Analysis of an Inverted-type Cross-flow Turbine for Ultra-low head Conditions  

Ham, Sangwoo (Advanced Mechanical Engineering, Graduate School, Kangwon National University)
Ha, Hojin (Division of Mechanical and Biomedical, Mechatronics, and Material Sience and Engineering, Kangwon National University)
Lee, Jeong Wan (Division of Mechanical and Biomedical, Mechatronics, and Material Sience and Engineering, Kangwon National University)
Publication Information
Journal of the Korean Society of Manufacturing Process Engineers / v.18, no.4, 2019 , pp. 76-86 More about this Journal
Abstract
The cross-flow turbine is a key hydraulic power system that is widely due to low costs, high efficiency, and low maintenance. In particular, the cross-flow turbine considered as the most suitable turbine for low head situations as it is known to operate down to 5 m of water head. However, the conventional cross-flow turbine is unsuitable for ultra-low head situations with less than a 3 m water head. In this study, we propose an inverted-type cross-flow turbine to overcome the limitations of conventional cross-flow turbines under ultra-low head situations. First, we described the limitations of conventional turbines and suggested a new turbine for the ultra-low head circumstances. Second, we investigated the performance of the new turbine using CFD analysis. Results demonstrated the effects of the design parameters, such as number of blades and rotor diameter ratio, on the performance of the suggested turbine. As a result, we developed an inverted-type cross-flow turbine with up to 60% efficiency under low water head conditions.
Keywords
Cross-flow Turbine; Computational Fluid Dynamics; Micro Hydro Power; Optimum Design; Ultra-low Head;
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