Influence of guide vane shape on the performance and internal flow of a cross flow wind turbine
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In order to make the vertical-axis cross flow wind turbine commercially feasible, a guide vane is adopted and the effect of the guide vane shape is examined in order to improve the wind turbine performance. CFD analysis on the performance and internal flow of the turbine is carried out for the wind turbine model. The result shows that when the guide nozzle is installed, almost over two times of power coefficient are achieved in comparison with the case of no guide nozzle installation. The guide nozzle acts as a role of suppressing the flow resistance at the blade passage, which is found when the guide nozzle is installed. Moreover, in this study, two kinds of the guide vane with a straight type and a curved type are adopted and compared. The curved guide vane nozzle produces higher power coefficient in comparison with that of straight guide vane nozzle.
Abstract
In order to make the vertical-axis cross flow wind turbine commercially feasible, a guide vane is adopted and the effect of the guide vane shape is examined in order to improve the wind turbine performance. CFD analysis on the performance and internal flow of the turbine is carried out for the wind turbine model. The result shows that when the guide nozzle is installed, almost over two times of power coefficient are achieved in comparison with the case of no guide nozzle installation. The guide nozzle acts as a role of suppressing the flow resistance at the blade passage, which is found when the guide nozzle is installed. Moreover, in this study, two kinds of the guide vane with a straight type and a curved type are adopted and compared. The curved guide vane nozzle produces higher power coefficient in comparison with that of straight guide vane nozzle.
참고문헌 (7)
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- K. Seki, "Vertical Axis Wind Turbine" (2008), Power Company Limited
- J. Fukutomi, "Study on performance and flow condition of a cross-flow wind turbine with a symmetrical casing", Journal of Fluids Engineering, 133 (2011)
- T. Shigemitsu, "Study on performance improvement of cross-flow wind turbine with symmetrical casing", Journal of Environment and Engineering, 4(3), pp.490~501 (2009)
- M. Goto, "Experimental study on vertical axis wind turbine for inhabited region", Proceedings of Japan Society of Mechanical Engineers Fluid Engineering Division Conference, 1304 (2001)
- S. W. Son, "CFD analysis on the cross-flow type wind turbine by guide nozzle shape", Wind Energy Journal, 1(2), pp.24~29 (2010)
- "ANSYS CFX Documentation"[URL]