E3S Web Conf.
Volume 64, 20182018 3rd International Conference on Power and Renewable Energy
|Number of page(s)||5|
|Section||Electrical Engineering and Mechatronics|
|Published online||27 November 2018|
Numerical Studies on a NACA0018 Airfoil Blade HAWT with Trailing Edge Jet Flow
1 Air Force Institute of Technology, No. 1, Jyulun Road, Gangshan Dist, Kaohsiung 82063, Taiwan
2 National Pingtung University of Science and Technology, No.1, Shuefu Road, Neipu, Pingtung 91201, Taiwan
3 National Cheng-Kung University, No.1, University Road, Tainan City 701, Taiwan
This study analyzed an airfoil blade for a horizontal-axis wind turbine (HAWT) with a trailing-edge jet flow design. This design was realized by drilling a hole in the trailing edge of an NACA0018 blade of a conventional HAWT to serve as a pressure injection nozzle. Five inflow wind speeds and three trailing-edge jet flow conditions were examined in the test. The results revealed the efficiency differences between a HAWT with the new jet flow design and conventional HAWTs. The experimental methods employed involved a wind tunnel experiment and a computational fluid dynamics (CFD) simulation. The results revealed that when the inflow wind speed was low, the trailing-edge jet flow accelerated the initiation phase and increased the rotating speed of the HAWT; however, when the inflow wind speed was high, damping occurred and the rotating speed of the turbine blades decreased.
© The Authors, published by EDP Sciences, 2018
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