Wind turbine blade tip flow and noise prediction by large-eddy simulation

被引：14
|
作者：
Fleig, O
Lida, M
Arakawa, C
机构：
[1] Univ Tokyo, Grad Sch Engn, Dept Mech Engn, Bunkyo Ku, Tokyo 1138656, Japan
[2] Univ Tokyo, Grad Sch Interfac Initiat Informat Studies, Bunkyo Ku, Tokyo 1138656, Japan
来源：
JOURNAL OF SOLAR ENERGY ENGINEERING-TRANSACTIONS OF THE ASME | 2004年 / 126卷 / 04期
关键词：
D O I：
10.1115/1.1800551
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
The purpose of this research is to investigate the physical mechanisms associated with broadband tip vortex noise caused by rotating wind turbines. The flow and acoustic field around a wind turbine blade is simulated using compressible large-eddy simulation and direct noise simulation, with emphasis on the blade tip region. The far field aerodynamic noise is modeled using acoustic analogy. Aerodynamic performance and acoustic emissions are predicted for the actual tip shape and an ogee type tip shape. For the ogee type tip shape the sound pressure level decreases by 5 dB for frequencies above 4 kHz.
引用
收藏
页码：1017 / 1024
页数：8
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