Aerodynamic noise analysis of large horizontal axis wind turbines considering fluid-structure interaction

被引：36
|
作者：
Kim, Hogeon [1 ]
Lee, Seunghoon [1 ]
Son, Eunkuk [1 ]
Lee, Seungmin [1 ]
Lee, Soogab [1 ]
机构：
[1] Seoul Natl Univ, Dept Mech & Aerosp Engn, Inst Adv Aerosp Technol, Seoul 151744, South Korea
来源：
RENEWABLE ENERGY | 2012年 / 42卷
关键词：
Aerodynamic noise; Nonlinear composite beam theory; Nonlinear vortex correction method; Fluid-structure interaction; AIRFOIL;
D O I：
10.1016/j.renene.2011.09.019
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Aerodynamic noise is one of the most serious barriers in wind energy development. To develop technologies for wind turbine noise reduction and assessment, noise needs to be predicted precisely with special consideration given to blade flexibility. The numerical tool, WINFAS, which can simulate fluid -structure interaction, consists of three parts: the first part, the Unsteady Vortex Lattice Method, analyzes aerodynamics: the second part, the Nonlinear Composite Beam Theory, analyzes structure; and the third part uses a semi-empirical formula to analyze airfoil self-noise and the Lowson's formula to analyze turbulence ingestion noise. In this study, using this numerical tool, the change in the noise strength due to blade flexibility was examined. This research showed that elastic blades decreased broadband noise because pitching motion reduced the angle of attack. (C) 2011 Elsevier Ltd. All rights reserved.
引用
收藏
页码：46 / 53
页数：8
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