后掠角对风力机翼型气动特性影响的实验研究

Chaoyu Zhang; Guangxing Wu; Kezhong Shi; Shuang Li; Mingming Zhang

doi:10.19912/j.0254-0096.tynxb.2019-1380

后掠角对风力机翼型气动特性影响的实验研究

Translated title of the contribution: Experimental investigation on aerodynamic characteristics of swept-back wind turbine airfoil

Chaoyu Zhang
, Guangxing Wu^*
, Kezhong Shi
, Shuang Li
, Mingming Zhang

^*Corresponding author for this work

CAS - Institute of Engineering Thermophysics
National Laboratory of Wind Turbine Blade Research & Development Center
Chinese Academy of Sciences
University of Chinese Academy of Sciences

Research output: Contribution to journal › Article › peer-review

Abstract

Taking wind turbine airfoil DU93-W-210 as the research object, a wind tunnel experiment was carried out to investigate the influence of sweep angle on aerodynamic characteristics of the airfoil. Experimental results reveal that the aerodynamic characteristics of the swept-back airfoil differ significantly in spanwise direction. With the increase of the angle of attack, the swept-back airfoil models undergo three stages of uniform attached flow, mixed separated flow and fully separated flow. Additionally, the slope of the C_L curve reduces and the C_Lmax of the upstream section rises with the increase of the sweep angle. Meanwhile, the sweep has a delay effect on light stall, but causes full stall to occur in advance. Moreover, a swept correction model based on decomposing the inflow velocity in the uniform attached flow region is proposed and validated by the experimental measurements. The correction model can provide a reference for the aerodynamic design of the swept-back blade.

Translated title of the contribution	Experimental investigation on aerodynamic characteristics of swept-back wind turbine airfoil
Original language	Chinese (Traditional)
Pages (from-to)	275-282
Number of pages	8
Journal	Taiyangneng Xuebao/Acta Energiae Solaris Sinica
Volume	42
Issue number	12
DOIs	https://doi.org/10.19912/j.0254-0096.tynxb.2019-1380
State	Published - 28 Dec 2021
Externally published	Yes

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SDG 7 Affordable and Clean Energy

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10.19912/j.0254-0096.tynxb.2019-1380

Cite this

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title = "后掠角对风力机翼型气动特性影响的实验研究",

abstract = "Taking wind turbine airfoil DU93-W-210 as the research object, a wind tunnel experiment was carried out to investigate the influence of sweep angle on aerodynamic characteristics of the airfoil. Experimental results reveal that the aerodynamic characteristics of the swept-back airfoil differ significantly in spanwise direction. With the increase of the angle of attack, the swept-back airfoil models undergo three stages of uniform attached flow, mixed separated flow and fully separated flow. Additionally, the slope of the CL curve reduces and the CLmax of the upstream section rises with the increase of the sweep angle. Meanwhile, the sweep has a delay effect on light stall, but causes full stall to occur in advance. Moreover, a swept correction model based on decomposing the inflow velocity in the uniform attached flow region is proposed and validated by the experimental measurements. The correction model can provide a reference for the aerodynamic design of the swept-back blade.",

keywords = "Aerodynamic characteristics, Airfoils, Back sweep, Wind tunnel, Wind turbines",

author = "Chaoyu Zhang and Guangxing Wu and Kezhong Shi and Shuang Li and Mingming Zhang",

year = "2021",

month = dec,

day = "28",

doi = "10.19912/j.0254-0096.tynxb.2019-1380",

language = "繁体中文",

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TY - JOUR

T1 - 后掠角对风力机翼型气动特性影响的实验研究

AU - Zhang, Chaoyu

AU - Wu, Guangxing

AU - Shi, Kezhong

AU - Li, Shuang

AU - Zhang, Mingming

PY - 2021/12/28

Y1 - 2021/12/28

N2 - Taking wind turbine airfoil DU93-W-210 as the research object, a wind tunnel experiment was carried out to investigate the influence of sweep angle on aerodynamic characteristics of the airfoil. Experimental results reveal that the aerodynamic characteristics of the swept-back airfoil differ significantly in spanwise direction. With the increase of the angle of attack, the swept-back airfoil models undergo three stages of uniform attached flow, mixed separated flow and fully separated flow. Additionally, the slope of the CL curve reduces and the CLmax of the upstream section rises with the increase of the sweep angle. Meanwhile, the sweep has a delay effect on light stall, but causes full stall to occur in advance. Moreover, a swept correction model based on decomposing the inflow velocity in the uniform attached flow region is proposed and validated by the experimental measurements. The correction model can provide a reference for the aerodynamic design of the swept-back blade.

AB - Taking wind turbine airfoil DU93-W-210 as the research object, a wind tunnel experiment was carried out to investigate the influence of sweep angle on aerodynamic characteristics of the airfoil. Experimental results reveal that the aerodynamic characteristics of the swept-back airfoil differ significantly in spanwise direction. With the increase of the angle of attack, the swept-back airfoil models undergo three stages of uniform attached flow, mixed separated flow and fully separated flow. Additionally, the slope of the CL curve reduces and the CLmax of the upstream section rises with the increase of the sweep angle. Meanwhile, the sweep has a delay effect on light stall, but causes full stall to occur in advance. Moreover, a swept correction model based on decomposing the inflow velocity in the uniform attached flow region is proposed and validated by the experimental measurements. The correction model can provide a reference for the aerodynamic design of the swept-back blade.

KW - Aerodynamic characteristics

KW - Airfoils

KW - Back sweep

KW - Wind tunnel

KW - Wind turbines

UR - https://www.scopus.com/pages/publications/85122210545

U2 - 10.19912/j.0254-0096.tynxb.2019-1380

DO - 10.19912/j.0254-0096.tynxb.2019-1380

M3 - 文章

AN - SCOPUS:85122210545

SN - 0254-0096

VL - 42

SP - 275

EP - 282

JO - Taiyangneng Xuebao/Acta Energiae Solaris Sinica

JF - Taiyangneng Xuebao/Acta Energiae Solaris Sinica

IS - 12

ER -

后掠角对风力机翼型气动特性影响的实验研究

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