基于N-S方程和自由转捩预测耦合求解的钝后缘翼型气动性能计算

邓磊; 乔志德; 杨旭东; 熊俊涛

doi:130.25/j.issn.0258-1825.2011.05.013

基于N-S方程和自由转捩预测耦合求解的钝后缘翼型气动性能计算

doi: 130.25/j.issn.0258-1825.2011.05.013

1.
西北工业大学翼型、叶栅空气动力学国家级重点实验室,西安 710072
2.
机械与航空与太空工程系,加州大学欧文分校,CA 92697 3975

详细信息

作者简介:
邓磊(1981-) ，男，安徽毫州人，博士研究生，主要从事CFD数值模拟、翼型设计和风力机叶片设计方面研究.

中图分类号: V211.41+2
计量
- 文章访问数: 2880
- HTML全文浏览量: 7
- PDF下载量: 1355
- 被引次数: 0
出版历程
- 收稿日期: 2010-09-12
- 刊出日期: 2011-10-25

Computational aerodynamic analysis of thick flatback airfoils coupling RANS and transition prediction code

1.
National Key Laboratory of Science and Technology on Aerodynamic Design and Research,Northwestern Polytechnical University, Xi′an 710072, China
2.
2. Department of Mechanical and Aerospace Engineering, University of California,CA 926973975, Irvine, USA

摘要

摘要: 大厚度钝后缘翼型由于结构和气动性能上的优点，被用于作为大型风力机叶片设计的内侧翼型。而由于其大厚度的特点和风洞实验阻塞度的限制，大雷诺数的风洞实验数据很少，给此类翼型的设计和使用带来困难。本文基于雷诺平均Navier-Stokes（RANS）方程和自由转捩预测耦合求解方法，进行了大厚度钝后缘翼型的气动性能计算研究；针对由于钝后缘后的涡脱落而造成的翼型表面压力分布的脉动，发展了有时均效应的转捩模型以考虑这种周期脉动的时均效应，并对传统的耦合求解方法进行了修改。通过对风力机翼型DU97-W-300的钝后缘改形DU97-Flat翼型的气动性能计算，分析了网格数对计算结果和计算效率的影响。并将计算的DU97-W-300翼型的气动性能和实验结果进行了比较，表明通过本文发展的耦合求解方法可以在更少的计算网格时得到比参考文献更吻合风洞实验结果的气动性能，为此类翼型的设计和使用提供数值计算基础。
- 风力机 /
- 翼型 /
- 钝后缘 /
- 耦合 /
- 转捩预测
Abstract: The flatbact (blunt trailing edge) airfoils are adopted for the inboard region of large wind turbine blades due to their structural and aerodynamic performance advantages. Very limited experimental data at high Reynolds numbers makes it difficult for wind turbine designers to design and use these section shapes because the wind tunnel experiments are limited by the Reynolds number and solid blockage. In this study, a 2D Reynoldsaveraged NavierStokes solver coupled with a transition prediction code based on en method is used to CFD calculation of blunt trailing edge airfoils. A new coupling structure with a timeaccurate transition prediction model taking into accounting the unsteady flow as a result of the bluffbody vortex shedding is developed. An airfoil of DU97Flat modified by DU97-W-300 airfoil for wind turbine application is calculated and effects of grid points are investigated. The aerodynamic performance indicators of DU97-W-300 are calculated and compared with Timmer′s wind tunnel experiment results.It shows that the indicators calculated from the method illustrated in this study agree much better to Timmer′s wind tunnel experiment results compared to other results from literature while with much less gird numbers.
- wind turbine /
- airfoil /
- flatback /
- couple /
- transition prediction

HTML全文

参考文献(1)

［1］MARSHALL L. Usage advice ［EB/OL］. http://wind.nrel. gov/designcodes/advice.html, Last modified 05-July-2005; accessed 28-Janu.2010.
［2］PATRICK J. AeroDyn theory manual［R］. NREL/EL-500-36881, 2005.
［3］SIMMS D, SCHRECK S, HAND M, FINGERSH L J. NREL unsteady aerodynamics experiment in the NASAAmes wind tunnel: A comparison of predictions to measurements［R］. NREL/TP-500-29494. Golden, CO: National Renewable Energy Laboratory, 2001.
［4］TANGLER J L. The nebulous art of using windtunnel airfoil data for predicting rotor performance［R］. NREL/CP-500-31243. Golden, CO: National Renewable Energy Laboratory, 2002［5］TPI Composites. Innovative design approaches for large wind turbine blades［R］. SAND2003-0723, 2003.
［6］TPI Composites. Innovative design approaches for large wind turbine bladesfinal report［R］, SAND2004-0074, 2004.
［7］STANDISH K J,van DAM C P. Aerodynamic analysis of blunt trailing edge airfoils［J］.Journal of Solar Energy Engineering, 2003, 125(4): 479-487.
［8］JACKSON K, ZUTECK M, van DAM C P, STANDISH K J,BERRY D. Innovative design approaches for large wind turbine blades［J］. Wind Energy, 2005, 8(2): 141-171.
［9］Van ROOIJ R P J O M, TIMMER W A. Roughness sensitivity considerations for thick rotor blade airfoils［J］. Journal of Solar Energy Engineering, 2003, 125(4): 468-478.
［10］BAKER J, MAYDA E, van DAM C P. Computational and experimental analysis of thick fatback wind turbine airfoils［R］. AIAA Paper 2006-193, 2006.
［11］CHAO D D, van DAM C P. RaNS analysis of an inboard flatback modification on the NREL phase VI rotor［R］. AIAA Paper 2006-195,2006.
［12］WINNEMOLLER T,van DAM C P.Design and numerical optimization of thick airfoils［R］.AIAA 2006-238,2006.
［13］TPI Composites. Computational design and analysis of flatback airfoil wind tunnel experiment［R］. SAND 2008-1782, 2008.
［14］STONE C, BARONE M, LYNCH C E, et al. A computational study of the aerodynamics and aeroacoustics of a flatback airfoil using hybrid RANSLES ［R］, AIAA 2009273, 2009.
［15］刘雄, 陈严, 叶枝全. 增加风力机叶片翼型后缘厚度对气动性能的影响［J］. 太阳能学报, 2007, 27(5):489-495.
［16］李秋悦, 申振华. 翼型进行钝后缘修改后气动性能的数值研究［J］. 沈阳航空工业学院学报, 2007, 24(1):1-5.
［17］张磊, 杨科, 赵晓路,等. 不同后缘改型方式对风力机钝后缘翼型气动性能的影响［J］. 工程热物理学报, 2009, 30(5):773-776.
［18］HANS W S, HASSE W. NavierStokes airfoil computations with transition prediction including transitional flow regions［J］. AIAA Journal, 2000: 38(11):2059-2066.
［19］MATTHEW F B, DALE B. Aerodynamic and aeroacoustic properties of a flatback airfoil: an update［R］. AIAA Paper 2009-271, 2009.
［20］STANDISH K J, van DAM C P. Analysis of blunt trailing edge airfoils［R］. AIAA 2003-353, 2003.
［21］KRUMBEIN A. NavierStokes airfoil computation with automatic transition prediction using the DLR TAU CodeA sensitivity study［M］. New Results in Numerical and Experimental Fluid Mechanics V., Springer Berlin/ Heidelberg, Vol. 92, 2006.
［22］Der LEE J, JAMESON A. Naturallaminarflow airfoil and wing design by adjoint method and automatic transition prediction［R］. AIAA-2009-897, 2009.
［23］TIMMER W A,van ROOIJ R P J O M. Design and wind tunnel test of airfoil DU 97-W-300［R］. IW-98003R, Institute for Wind Energy, the Netherlands:Delft University of Technology, 1999.

施引文献

资源附件(0)

访问统计