论文:2012,Vol:30,Issue(4):513-517
引用本文:
余雷, 宋文萍, 闫利. 平底后缘风力机翼型气动噪声计算研究[J]. 西北工业大学
Yu Lei, Song Wenping, Yan Li. An Effective Method for Predicting Aerodynamic Noise for Wind Turbine Flatback Airfoils[J]. Northwestern polytechnical university

平底后缘风力机翼型气动噪声计算研究
余雷1, 宋文萍1, 闫利2
1. 西北工业大学 翼型叶栅空气动力学国防科技重点实验室,陕西 西安 710072;
2. 河南工业大学 土木建筑学院,河南 郑州 450001
摘要:
基于二维雷诺平均NS方程,采用SST k-ω湍流模型结合γ-Reθt转捩判断方法,对传统尖后缘翼型及修形后的平底后缘翼型进行了粘性绕流数值计算;在此基础上结合Ffowcs Williams-Hawkings(FW-H)声学方程,采用混合方法对平底后缘翼型的气动噪声进行了计算。计算结果和实验结果吻合良好,表明文中方法在平底后缘风力机翼型气动噪声计算方面具有良好的应用前景。
关键词:    平底后缘翼型    气动噪声计算    γ-Reθt转捩判断方法    CFD/FW-H方法   
An Effective Method for Predicting Aerodynamic Noise for Wind Turbine Flatback Airfoils
Yu Lei1, Song Wenping1, Yan Li2
1. National Key Laboratory of Science and Technology on Aerodynamic Design and Research, Northwestern Polytechnical University, Xi'an 710072, China;
2. Department of Civil and Architectural Engineering, Henan University of Technology, Zhengzhou 450001, China
Abstract:
Section 1 of the full paper explains our prediction method mentioned in the title,which we believe is ef-fective and whose core is: using two-dimensional Reynolds-averaged Navier-Stokes equations,we calculate the flowaround a conventional sharp trailing edge airfoil and its flatback version employing γ-Reθttransition prediction meth-od based on SST turbulence model; the aerodynamic noise of the flatback airfoil is then computed using hybridmethod combining the former CFD results with the Ffowcs Williams-Hawkings(FW-H) equation. Section 2 presentsboth aerodynamic and acoustic results in Figs. 3 through 9,and analyze most of them,showing preliminarily thatthe calculated results are in good agreement with experimental data; thus section 2 indicates that our method is suc-cessful for predicting aerodynamic noise for wind turbine flatback airfoils.
Key words:    aeroacoustics    airfoils    calculations    computational fluid dynamics    computational geometry    drag    mathematical models    Navier Stokes equations    pressure distribution    spectrum analysis    turbulence    two dimensional    unsteady flow    wind turbines;aerodynamic noise prediction    Ffowcs Williams-Hawkings(FW-H) equation    flatback airfoil    γ-Reθttransition prediction method   
收稿日期: 2011-09-20     修回日期:
DOI:
基金项目: 国家高技术研究发展计划(2007AA05Z448与2012AA051301)资助
通讯作者:     Email:
作者简介: 余雷(1984-),西北工业大学博士研究生,主要从事计算流体力学和计算航空声学的研究。
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