Table of Contents Author Guidelines Submit a Manuscript
Applied Bionics and Biomechanics
Volume 2017, Article ID 8504638, 10 pages
https://doi.org/10.1155/2017/8504638
Research Article

Bionic Design of Wind Turbine Blade Based on Long-Eared Owl’s Airfoil

1Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun 130022, China
2State Key Laboratory of Automotive Simulation and Control, Jilin University, Changchun 130022, China
3China Automotive Engineering Research Institute Co., Ltd., Chongqing 401122, China

Correspondence should be addressed to Qian Cong; nc.ude.ulj@naiqgnoc

Received 8 September 2016; Accepted 10 November 2016; Published 22 January 2017

Academic Editor: Luis Gracia

Copyright © 2017 Weijun Tian et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The main purpose of this paper is to demonstrate a bionic design for the airfoil of wind turbines inspired by the morphology of Long-eared Owl’s wings. Glauert Model was adopted to design the standard blade and the bionic blade, respectively. Numerical analysis method was utilized to study the aerodynamic characteristics of the airfoils as well as the blades. Results show that the bionic airfoil inspired by the airfoil at the 50% aspect ratio of the Long-eared Owl’s wing gives rise to a superior lift coefficient and stalling performance and thus can be beneficial to improving the performance of the wind turbine blade. Also, the efficiency of the bionic blade in wind turbine blades tests increases by 12% or above (up to 44%) compared to that of the standard blade. The reason lies in the bigger pressure difference between the upper and lower surface which can provide stronger lift.