A Parametric Study about Blade Shapes and Blade Numbers of Water Wheel Type Tidal Turbine by Numerical Method
| Autor: | Haechang Jeong, Bu-gi Kim, Sung-su Jhang, Chang-Jo Yang, Manh Hung Nguyen |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Tip-speed ratio Engineering Blade (geometry) business.industry Rotor (electric) 010604 marine biology & hydrobiology Numerical analysis 020101 civil engineering 02 engineering and technology Structural engineering Computational fluid dynamics 01 natural sciences Turbine 0201 civil engineering law.invention law business Water wheel Tidal power |
| Zdroj: | Journal of the Korean Society of Marine Environment and Safety. 22:296-303 |
| ISSN: | 2287-3341 1229-3431 |
| DOI: | 10.7837/kosomes.2016.22.3.296 |
| Popis: | In this paper, a numerical experiment on a tidal turbine was performed based on a water wheel design using the commercial CFD code ANSYS-CFX to contribute to the development of water wheels. The water wheel type tidal turbine was studied with different numbers of rotor blades (including ten, twelve and twenty blades types) and with different blade shapes (Straight, Curved and Zuppinger types) for comparison at several values of tip speed ratio (TSR) ranging from 0.7 to 1.2. The numerical results indicated that the 10-bladed type and the Straight-bladed type turbines absorb the highest power efficiency, up to 43 % at TSR 0.9. In addition, the 20-bladed and the Curved-bladed types showed the lowest performances in all cases of TSRs comparing with the others. Besides that, it was found that this turbine operates much effectively at low range of TSR, especially at TSRs 0.9 and 1 for all cases of blade shapes and all numbers of blades. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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