文章基本信息

标题：The Performance of a Vertical Axis Wind Turbine with Camber and Tubercle Leading Edge as Blade Passive Motion Controls
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作者：Ian Carlo M. Lositano ; Louis Angelo M. Danao
期刊名称：Lecture Notes in Engineering and Computer Science
印刷版ISSN：2078-0958
电子版ISSN：2078-0966
出版年度：2018
卷号：2235&2236
页码：551-556
出版社：Newswood and International Association of Engineers
摘要：The use of computational fluid dynamics (CFD) to solve the Reynolds-Averaged Navier-Stokes (RANS) equations in vertical axis wind turbine (VAWT) systems has been remarkably helpful in the performance improvement of VAWTs. In this study, the k-ω SST turbulence model was used to predict the steady wind flow performance of a 5kW threebladed H-rotor Darrieus VAWT with cambering and tubercle leading edge (TLE) incorporated in the blades. TLE modification on a cambered airfoil VAWT was shown to be detrimental to flow and performance using torque, lift and drag data. These were further verified using the vorticity profiles showing the z-vorticity and Q-criterion where the baseline cambered VAWT was shown to have streamlined flow generally throughout one full VAWT rotation while the TLE VAWT generated explicitly massive vortices the size of the blade chord at blade wakes between azimuthal positions of 106° and 180° that induced drag increase and torque reduction. Between θ = 55° to 186°, negative torque values up to -3.59Nm were monitored. These negative torques coupled with the reduced lift sufficiently caused the overall performance degradation. The TLE blade in the VAWT generated turbulence instead of containing or decreasing it. Unlike the cambered VAWT that harnessed 41.6W of the 137.8W available wind power, the TLE VAWT generated only 9.28W of power.
关键词：TLE; Camber; VAWT; CFD