Starting torque improvement using J-shaped straight-bladed Darrieus vertical axis wind turbine by means of numerical simulation |
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| Affiliation: | 1. Department of Mechanical Engineering, University of la Rioja, Edificio Departamental, C/Luis de Ulloa, 4, 26004 Logroño, La Rioja, Spain;2. Department of Electrical Engineering, University of la Rioja, Edificio Departamental, C/Luis de Ulloa, 4, 26004 Logroño, La Rioja, Spain;1. Mechanical Engineering Department, Ferdowsi University of Mashhad, Mashhad, Iran;2. Mechanical Engineering Department, Quchan University of Advanced Technology, Quchan, Iran;1. Division of System Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan;2. Division of Mechanical Engineering, Mie University, 1577 Kurimamachiya-cho, Tsu, Mie 514-8507, Japan;1. Department of Civil and Mechanical Engineering, University of Cassino and Southern Lazio, Cassino, FR, Italy;2. Department of Economics, Engineering, Society and Business Organization, University of Tuscia, Viterbo, Italy |
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| Abstract: | In this study a 3 kW straight–bladed Darrieus type Vertical Axis Wind Turbine (VAWT) is investigated numerically using OpenFOAM computational fluid dynamic package. The newly proposed J-Shaped profile is used as the blade airfoil in the simulation. The J-Shaped profile is designed by means of eliminating a fraction of pressure side of Du 06-W-200 airfoil. The main purpose of this investigation is the improvement of the VAWT starting torque using J-shaped profile. The power curves for both conventional and J-shaped profiles are calculated and the torque variation is obtained at different azimuth angles. In addition, the vorticity and pressure field surrounding the wind turbine is presented. The results indicate that the performance of turbine is optimized for J-shaped profile which eliminates the pressure side of airfoil from the maximum thickness toward the trailing edge. Moreover, by employing this J-Shaped profile, the wind turbine performance is intensified TSRs and self-starting of turbine is improved. |
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| Keywords: | Vertical axis wind turbine J-shaped profile Numerical solution Starting torque |
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