Aerodynamic Analysis of an Airfoil With Leading Edge Pitting Erosion
Aerodynamic Analysis of an Airfoil With Leading Edge Pitting Erosion
复制标题
前缘点蚀机翼的气动分析
DOI：
10.1115/1.4037380
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发表时间：
2017-12
影响因子：
2.3
通讯作者：
xiaojing zheng
中科院分区：
文献类型：
--
作者：
yan wang;ruifeng hu;xiaojing zheng
前缘冲蚀对涡轮机的性能和叶片的维护是一个相当大的威胁，准确预测不同程度的冲蚀对风力机涡轮机性能的影响是非常必要的。本文采用计算流体动力学（CFD）方法研究了前缘烧蚀对风力涡轮机翼型气动特性的影响。提出了一种新的孔蚀模型，并在模拟中采用圆形孔洞来表示孔蚀坑。采用二维不可压雷诺平均Navier-Stokes方程和剪切应力输运（SST）k-ω湍流模型，对S809翼型前缘点蚀气动特性进行了数值模拟，考虑了点蚀深度、密度、分布面积和位置等因素的影响。结果表明，点蚀对翼型气动性能有显著的不利影响，并得到了对翼型气动性能影响最大的临界点蚀坑深度、密度和分布面积。结果表明，各参数对S809翼型气动性能的影响不可忽略，其中雷诺数对S809翼型气动性能的影响最大，其次是凹坑密度、凹坑深度和凹坑分布面积。同时，分析了这些因素的直接和间接影响，发现间接影响很小，可以认为这些参数是相互独立的。
Leading edge erosion is a considerable threat to wind turbine performance and blade maintenance, and it is very imperative to accurately predict the influence of various degrees of erosion on wind turbine performance. In the present study, an attempt to investigate the effects of leading edge erosion on the aerodynamics of wind turbine airfoil is undertaken by using computational fluid dynamics (CFD) method. A new pitting erosion model is proposed and semicircle cavities were used to represent the erosion pits in the simulation. Two-dimensional incompressible Reynolds-averaged Navier–Stokes equation and shear stress transport (SST) k–ω turbulence model are adopted to compute the aerodynamics of a S809 airfoil with leading edge pitting erosions, where the influences of pits depth, densities, distribution area, and locations are considered. The results indicate that pitting erosion has remarkably undesirable influences on the aerodynamic performance of the airfoil, and the critical pits depth, density, and distribution area degrade the airfoil aerodynamic performance mostly were obtained. In addition, the dominant parameters are determined by the correlation coefficient path analysis method, results showed that all parameters have non-negligible effects on the aerodynamics of S809 airfoil, and the Reynolds number is of the most important, followed by pits density, pits depth, and pits distribution area. Meanwhile, the direct and indirect effects of these factors are analyzed, and it is found that the indirect effects are very small and the parameters can be considered to be independent with each other.
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影响因子：
2.1
作者：
D. R. Dewey;K. Lu
通讯作者：
D. R. Dewey;K. Lu
DOI：
--
发表时间：
2012-10
期刊：
--
影响因子：
--
作者：
Chinmay A. Sapre
通讯作者：
Chinmay A. Sapre
影响因子：
6.6
作者：
Shizhong Zhang;K. Dam‐Johansen;Sten Nørkjær;P. Bernad;S. Kiil
通讯作者：
Shizhong Zhang;K. Dam‐Johansen;Sten Nørkjær;P. Bernad;S. Kiil
DOI：
10.2514/152157
发表时间：
1984
期刊：
--
影响因子：
--
作者：
J. Anderson
通讯作者：
J. Anderson
影响因子：
11.2
作者：
Gharali, Kobra;Johnson, David A.
通讯作者：
Johnson, David A.