Impacts of Leading Edge Pitting and Delamination on Aerodynamic Characteristics of Wind Turbine Blades under Shear Inflow

doi:10.17559/tv-20210226103125

	Impacts of Leading Edge Pitting and Delamination on Aerodynamic Characteristics of Wind Turbine Blades under Shear Inflow
	Wang, Yan 1,2,3; Chai, Yongfen 1,3; Duan, Chenglin 1,3; Zheng, Jian 3
刊名	Tehnicki Vjesnik
	2022
卷号	29 期号:3 页码:831-839
关键词	Aerodynamics Horizontal axis wind turbine Navier Stokes equations Shear flow Shear stress Turbine components Turbomachine blades Turbulence models Vortex flow Wind Wind turbine blades Aerodynamic characteristics Blade Surface Eroded blades Harsh environment Performance degradation Pitting and delamination Pittings Shear inflow Surface streamlines Wind turbine blades
ISSN号	1330-3651
DOI	10.17559/tv-20210226103125
英文摘要	Undesirable performance degradation occurs when wind turbine operates in harsh environment, thus investigation of the impact of various degrees of leading edge erosion on the aerodynamic characteristics of wind turbine is significant and highly desirable. In this study, significant research efforts were made to explore the effects of leading edge pitting and delamination on blade surface streamlines, flow structures, pressure coefficients, and aerodynamic forces of horizontal wind turbine under shear inflow. The k-ω shear-stress transport turbulence model was adopted to close the three-dimensional incompressible Reynolds-averaged Navier-Stokes. The results indicate the existence of significant differences on surface streamlines between the smooth and eroded blade. The leading edge of the entire blade gets covered with the attached flow, while just a small area for the eroded blade is covered when it is at the lowest position. Moreover, small separation bubble appears at the suction surface of the section near the blade root, which grows bigger and induces a second vortex when the section moves to the middle of the blade and then the size gets smaller when the section is near the blade tip. With the increase of erosion, the pressure difference of blade surface decreases, indicating a severe decrease in performance of eroded blade. Furthermore, leading edge erosion causes a decrease in average torque coefficients by 19.75, 29.01, 41.82, and 42.54% for various leading edge erosion cases at the inflow wind speed of 10 ms-1, and 25.0, 49.6, 51.3, and 54.6% at the speed of 20 ms-1. © 2022, Strojarski Facultet. All rights reserved.
语种	英语
出版者	Strojarski Facultet
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/159411]
专题	能源与动力工程学院
作者单位	1.Key Laboratory of Fluid Machinery and Systems of Gansu Province, Lanzhou; 730050, China 2.College of Civil Engineering and Mechanics, Lanzhou University, Lanzhou; 730000, China; 3.School of Energy & Power Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Wang, Yan,Chai, Yongfen,Duan, Chenglin,et al. Impacts of Leading Edge Pitting and Delamination on Aerodynamic Characteristics of Wind Turbine Blades under Shear Inflow[J]. Tehnicki Vjesnik,2022,29(3):831-839.
APA	Wang, Yan,Chai, Yongfen,Duan, Chenglin,&Zheng, Jian.(2022).Impacts of Leading Edge Pitting and Delamination on Aerodynamic Characteristics of Wind Turbine Blades under Shear Inflow.Tehnicki Vjesnik,29(3),831-839.
MLA	Wang, Yan,et al."Impacts of Leading Edge Pitting and Delamination on Aerodynamic Characteristics of Wind Turbine Blades under Shear Inflow".Tehnicki Vjesnik 29.3(2022):831-839.