水平轴风力机气动性能的大涡模拟研究  

Large Eddy Simulation Investigation on Horizontal Axis Wind Turbine's Aerodynamic Performance

作　　者：雷延生[1] 周正贵[1] 

机构地区：[1]南京航空航天大学能源与动力学院,江苏南京210016

出　　处：《能源研究与利用》2008年第5期15-18,共4页Energy Research & Utilization

基　　金：国家重点研究发展"973"计划(2007CB210301)

摘　　要：水平轴风力机风轮气动性能计算能准确描述风力机的运行状况,为风力机风轮气动设计结果提供评价和反馈。为探索风轮气动性能高精度的计算方法,在南航利用CFD软件Fluent中使用大涡模拟,对SVIAB WG500风力机的气动特性进行数值研究,并对洞壁干扰因素进行修正。结果证明,由于能够对大尺度涡流精确计算,大涡模拟比S-A模型在风力机气动性能计算上具有更高的精度。在大涡模拟计算结果的基础上,对三维风轮气动性能做进一步地分析,得到SVIAB WG500风力机的最佳运行尖速比以及沿叶高方向翼型气动变化规律。The calculation o f horiz o ntal axis wind turbine can describe wind turbine＇s operation status correctly, also give evaluation and feedback to the aerodynamic designing of wind turbine. To look for a high precision calculation method, the paper does experiment in NUAA＇s high performance computer laboratory using the large eddy simulation in CFD software Fluent to investigate the aerodynamic performance of SVIAB WG500 in numerical method. And then modify the resuls with conserding wall interference. The results show that to use large eddy simulation can get higher precision results in wind turbine aerodynamic perfomance＇s calculation than to use S-A model, for large eddy simulation can calculate a high precision result in large-scale vortex. Based on high precision calculated, by using large eddy simulation, the paper make a further analysis on three-dimensional wind rotor, then conclude the best tip-speed ratio for SVIAB WG500 and the changing of airfoil＇s aerodynamic performance along the blade height.

关 键 词：SVIAB WG500风力机 气动性能 大涡模拟 洞壁干扰 

分 类 号：TK83[动力工程及工程热物理—流体机械及工程]