STUDY ON NEAR-WAKE AERODYNAMIC NOISE OF WIND TURBINE UNDER DYNAMIC INFLOW

被引：0

作者：

Rong Y. ^{[1
]}

Ma J. ^{[1
,2
,3
]}

Zhao X. ^{[1
]}

Lyu W. ^{[4
]}

Su H. ^{[1
]}

Zhang P. ^{[1
]}

机构：

[1] School of Energy and Power Engineering, Inner Mongolia University of Technology, Hohhot

[2] Engineering Research Center of Renewable Energy, Universities of Inner Mongolia Autonomous Region, Hohhot

[3] Key Laboratory of Wind Energy and Solar Energy Technology, Ministry of Education, Hohhot

[4] Research Center of Technology and Vocational Education, Inner Mongolia Technical College of Mechanics and Electrics, Hohhot

来源：

Taiyangneng Xuebao/Acta Energiae Solaris Sinica | 2023年 / 44卷 / 12期

关键词：

acoustic noise measurement; dynamic inflow; pressure pulsation; vorticity; wind turbines;

D O I：

10.19912/j.0254-0096.tynxb.2022-1316

中图分类号：

学科分类号：

摘要：

Based on the non-stationary characteristic of natural wind，three kinds of dynamic inflow functions are fitted based on the actual operating conditions of an S-wing horizontal axis wind turbine，and the non-stationary calculation models under different inflow are established to study the effects of dynamic inflow on the wake aerodynamic noise and blade pressure pulsation. The results show that：the sound pressure level at each octave is higher than that at constant inflow under dynamic inflow，and the magnitude is as follows：disturbance inflow >gradient inflow > gust inflow > constant inflow；the sensitivity of dynamic inflow to sound pressure level increases with the increase of octave order；the sensitivity of dynamic inflow to sound pressure level increases with the increase of octave order. The sound pressure level difference between dynamic inflow and constant inflow along the axial direction gradually increases；the peak pressure pulsation of gust inflow，gradual inflow and disturbance inflow increases in turn，which is also the reason for the same size law of sound pressure level. By analyzing the influence of the inflow condition on the blade sound field distribution and change law，it provides some theoretical and reference basis for future large blade noise assessment and noise reduction design. © 2023 Science Press. All rights reserved.

引用

页码：266 / 273

页数：7

共 10 条

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