Numerical Modelling and Design of Horizontal-Axis Wind Turbine (HAWT) Blade for Low Wind Speed Regimes
Published: 2016
Author(s) Name: Amlan Das |
Author(s) Affiliation: Asst. Prof., Mechanical Engg. Department, Bhubaneswar Engg. College, Bhubaneswar, Odisha, India
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Abstract
In this paper a set of 3 airfoils of the NWT family designed by National Aerospace Laboratories (NAL) has been modified. The modified airfoils are NWT 1001, NWT 2004, and NWT 2005. The main purpose of modifying is to shoot the low wind speed regimes hence to get more coefficient of lift and less coefficient of drag. These new modified airfoils are numerically modeled, and are used to design a blade of 2.5m radius. Since airfoils play a very important role in blade design and its enhancement in the power production of wind turbine in the low wind speed conditions makes the design unique. The comprehensive study of modified NWT airfoils and its geometrical optimization are scrutinized to improve the coefficient of performance of the blade with the Reynolds number in the range of 250000. The Dual Evolutionary method is used to optimize the blade. The proposed design is very simple and more suitable for Indian low wind speed regimes.
Keywords: Modified NWT Airfoils, Blade Design, Numerical Modeling, Computational Fluid Dynamics, Optimization
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