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A Numerical Study on Tip Rake HAT Impeller Performance for Tidal Stream Power  

Shin, Byung-Chul (Department of Naval Architecture & Ocean Engineering, Pusan National University)
Kim, Moon-Chan (Department of Naval Architecture & Ocean Engineering, Pusan National University)
Do, In-Rok (Department of Naval Architecture & Ocean Engineering, Pusan National University)
Rhee, Shin-Hyung (Department of Naval Architecture & Ocean Engineering, Seoul National University)
Hyun, Beom-Soo (Division of Naval Architecture & Ocean Systems Engineering, Korea Maritime University)
Song, Mu-Seok (Department of Naval Architecture & Ocean Engineering, Hongik University)
Publication Information
Journal of the Korean Society for Marine Environment & Energy / v.13, no.4, 2010 , pp. 263-269 More about this Journal
Abstract
The present study deals with the investigation about the improvement of performance of tidal stream turbine blade (HAT) with tip rake. HAT impeller has sometimes experienced noise and vibration by Tip vortex which causes even erosion and severe efficiency loss to the blade, The newly proposed tip rake impeller can make the tip vortex week compared with a normal impeller by preventing the three dimensional effect at tip region. In order to find out the optimum rake impeller, three cases have been designed and the performance of the designed rake impellers has been validated by the commercial CFD code(Fluent). The efficiency of optimized rake impeller was up to 4.6% higher than the conventional impeller. The more parametric study for high efficiency and good cavitation performance is expected to be conducted in a near future.
Keywords
HAT; Tidal stream power generation; Renewable energy; Rake; Blade tip vortex;
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Times Cited By KSCI : 1  (Citation Analysis)
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