Conceptual design and numerical simulations of a vertical axis water turbine used for underwater mooring platforms
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Energy is a direct restriction to the working life of an underwater mooring platform (UMP). In this paper,a vertical axis water turbine (VAWT) is designed to supply energy for UMPs. The VAWT has several controlled blades,which can be opened or closed by inside plunger pumps. Two-dimensional transient numerical studies are presented to determine the operating performance and power output of the turbine under low ocean current velocity. A standard k-εturbulence model is used to perform the transient simulations. The influence of structural parameters, including foil section profile, foil chord length and rotor diameter, on the turbine performance are investigated over a range of tipspeed-ratios ( TSRs ). It was found that turbine with three unit length NACA0015 foils generated a maximum averaged coefficient of power, 0.1, at TSR = 2.
Abstract
Energy is a direct restriction to the working life of an underwater mooring platform (UMP). In this paper,a vertical axis water turbine (VAWT) is designed to supply energy for UMPs. The VAWT has several controlled blades,which can be opened or closed by inside plunger pumps. Two-dimensional transient numerical studies are presented to determine the operating performance and power output of the turbine under low ocean current velocity. A standard k-εturbulence model is used to perform the transient simulations. The influence of structural parameters, including foil section profile, foil chord length and rotor diameter, on the turbine performance are investigated over a range of tipspeed-ratios ( TSRs ). It was found that turbine with three unit length NACA0015 foils generated a maximum averaged coefficient of power, 0.1, at TSR = 2.
참고문헌 (19)
- Akwa, J., "Discussion on the verification of the overlap ratio influence on performance coefficients of a Savonius wind rotor using computational fluid dynamics", Renewable Energy, 38(1), pp.141~149 (2012)
- Altan, B., "An experimental and numerical study on the improvement of the performance of Savonius wind rotor", Energy Conversions and Management, 49(12), pp.3425~3432 (2008)
- Declaire, P., "Analytical solutions for a single blade in vertical axis turbine motion in two-dimensions", European Journal of Mechanics-B, 2009, pp.28(4), 506~520
- Golecha, K., "Influence of the deflector plate on the performance of modified Savonius water turbine", Applied Energy, 88(9), pp.3207~3217 (2011)
- Gupta, R., "Computational fluid dynamics analysis of a twisted three-bladed H-Darrieus rotor", Journal of Renewable and Sustainable Energy, 2(4), pp.1~15 (2010)
- Howell, R., "Wind tunnel and numerical study of a small vertical axis wind turbine", Renewable Energy, 35(2), pp.412~422 (2010)
- Hwang, S., "Optimization of cycloidal water turbine and the performance improvement by individual blade control", Applied Energy, 86(9), pp.1532~1540 (2009)
- Irabu, K., "Study of direct force measurement and characteristics on blades of Savonius rotor at static state", Experimental Thermal and Fluid Science, 35(4), pp.653~659 (2011)
- 정현주, "Unsteady flow around a two-dimensional section of a vertical axis turbine for tidal stream energy conversion", International Journal of Naval Architecture and Ocean Engineering, 1(2), pp.64~69 (2009), 대한조선학회
- Myers, L., "Experimental analysis of the flow field around horizontal axis tidal turbines by use of scale mesh disk rotor simulators", Ocean Engineering, 37(2), pp.218~227 (2010)
- Dynamic stall regulation of the darrieus turbine, "Oler, J. W.", Sandia National Laboratories, ~, pp.SANDIA REPORT SAND83- 7029 UC-261 (1983)
- Ponta, F., "An improved vertical-axis water-current turbine incorporating a channeling device", Renewable Energy, 20(2), pp.223~241 (2000)
- Pope, K., "Power correlation for vertical axis wind turbines with varying geometries", International Journal of Energy Research, 35(5), pp.423~435 (2011)
- Robert, C. B., "Mechanical design of a self-mooring autonomous underwater vehicle", 석사, pp.2010
- Saha, U., "Optimum design configuration of Savonius rotor through wind tunnel experiments", Journal of Wind Engineering and Industrial Aerodynamics, 96(3), pp.1359~1375 (2008)
- Schonbore, A., "Development of a hydraulic control mechanism for cyclic pitch marine current turbines", Renewable Energy, 32(4), pp.662~679 (2007)
- Webb, D. C., "Slocum : an underwater glider propelled by environmental energy", IEEE Journal of Oceanic Engineering, 26(4), pp.447~452 (2001)
- Yang, B., "Fluid dynamic performance of a vertical axis turbine for tidal currents", Renewable Energy, 36(12), pp.3355~3366 (2011)
- Ye, L., "Three-dimensional effects and arm effects on modeling a vertical axis tidal current turbine", Renewable Energy, 35(10), pp.2325~2334 (2010)