自然条件（外场条件）下水平轴风力机风轮和叶片的气动特性研究

项目名称： 自然条件（外场条件）下水平轴风力机风轮和叶片的气动特性研究

项目编号： No.11262011

项目类型： 地区科学基金项目

立项/批准年度： 2013

项目学科： 数理科学和化学

项目作者： 杨从新

作者单位： 兰州理工大学

项目金额： 52万元

中文摘要： 在自然条件（外场条件）下，风力机总是在风速大小和方向快速变化的非定常空气动力环境里运转，并经受高度的湍流和风剪切，其特性呈现出高度的非线性和非定常性。本课题将以兆瓦级风力机和我国西北陆地风场为背景，依托已搭建的水平轴风力机外场实验平台，以孤立的风力机为对象，在保证流场测量和计算的准确性基础上，主要通过实验和理论计算及分析，通过测量主风向和侧风时，不同风速、风剪切和不同湍流度下，风力机风轮和叶片在不同时刻和位置时的风轮气动特性和叶片表面流场的状况（压力分布等），得出在外场条件下风轮和叶片相应的荷载分布和风力机风轮的气动特性，进而研究自然条件下水平轴风力机风轮和叶片的气动特性，建立起自然条件（外场条件）下，来流湍流度与水平轴风力机风轮和叶片气动特性的关系和来流风剪切与水平轴风力机风轮和叶片气动特性的关系, 为揭示自然条件（复杂风况）下风力机风轮三维旋转非定常空气动力学特性提供依据。

中文关键词： 风力机；风轮；叶片；外场实验；特性

英文摘要： Wind turbines operate in the natural unsteady aerodynamic environments (Field conditions) in which wind with turbulence and wind shear always quickly changes in magnitude and direction, so the characteristics of wind turbines behave in nonlinearity and unsteadiness. On the background of MW scale Horizontal Axis Wind Turbines (HAWT) and the wind farms located in the northwest of our country, relying on the established experimental system in the field ,targeting a sing HAWT for field experiments and ensuring the exactness of the measurement and calculation, by means of the experiments, theoretical calculations and analyses, according to the blade position in the circumference of the rotor of the HAWT at different time, the aerodynamic loads exerting on the rotor and blade and the aerodynamic characteristics of the rotor of the HAWT can be obtained by measuring the aerodynamic characteristics of the rotor and the pressure distribution on the surface of the blade corresponding to the wind speed, wind shear and turbulence when the wind is blowing in the main and lateral directions. Furthermore, the aerodynamic characteristics of the rotor and blade of the HAWT also can be investigated, so the relationship between the wind turbulence and the aerodynamic characteristics of the rotor and blade of the HAWT and the relat

英文关键词： Wind turbine；Rotor；Blade；Field experiment；Characteristic