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论文:2012,Vol:30,Issue(4):513-517 |
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引用本文: |
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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 |
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Yu Lei, Song Wenping, Yan Li. An Effective Method for Predicting Aerodynamic Noise for Wind Turbine Flatback Airfoils[J]. Northwestern polytechnical university |
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平底后缘风力机翼型气动噪声计算研究 |
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余雷1, 宋文萍1, 闫利2 |
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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
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An Effective Method for Predicting Aerodynamic Noise for Wind Turbine Flatback Airfoils |
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Yu Lei1, Song Wenping1, Yan Li2 |
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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
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收稿日期: 2011-09-20
修回日期:
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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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相关功能 |
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作者相关文章 |
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余雷 在本刊中的所有文章 |
宋文萍 在本刊中的所有文章 |
闫利 在本刊中的所有文章 |
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参考文献: |
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[1] Standish K J and Van Dam C P. Aerodynamic Analysis of Blunt Trailing Edge Airfoils. Journal of Solar Energy Engineering,2003, 125:479-487 [2] Doosttalab M, Frommann O. Effects of the Design Parameters on the Multidisciplinary Optimization of Flatback Airfoils for LargeWind Turbine Blades. AIAA 2010-9096 [3] Van Dam C P,Kahn D L,Berg D E. Trailing Edge Modifications for Flatback Airfoils. SANDIA Report,SAND 2008-1781 [4] Farassat F,Casper H. Towards an Airframe Noise Prediction Methodology: Survey of Current Approaches. AIAA-2006-0210 [5] Menter F R,Langtry R B,Likki S R,et al. A Correlation Based Transition Model Using Local Variables-Part 1: Model Formu-lation. Journal of Turbomachinery, 2006, 128:413-422 [6] 陈 奕,高正红. Gamma-Theta 转捩模型在绕翼型流动问题中的应用. 空气动力学学报, 2009, 27(4):411~418Chen Yi,Gao Zhenghong. Application of Gamma-Theta Transition Model to Flows Around Airfoils. Acta Aerodynamica Sinica,2009, 27(4):411-418 (in Chinese) [7] 张 辉,宋文萍,张坤. 基于 γ-Reθt转捩模型的翼型气动特性计算精度改进研究. 航空计算技术, 40(4):11-17Zhang Hui,Song Wenping,Zhang Kun. Accuracy Improvement on Two-dimensional RANS Solver through the γ-ReθtTransitionModel. Aeronautical Computing Technique, 40(4):11-17 (in Chinese) [8] Barone M F,Berg D. Aerodynamic and Aeroacoustic Properties of a Flatback Airfoil: An Update. AIAA-2009-271 [9] Beng D E,Zayas J R. Aerodynamic and Aeroacoustic Properties of Flatback Airfoils. AIAA-2008-1455 |
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