|
| 尾缘襟翼对风力机翼型气动特性影响研究 |
| Influence of trailing edge flap on the aerodynamic performance of wind turbine airfoil |
| 投稿时间：2015-09-03 |
| DOI：10.13259/j.cnki.eri.2018.03.001 |
| 中文关键词: 风力机 翼型 气动特性 尾缘襟翼 |
| 英文关键词:wind turbine airfoil aerodynamic performance trailing edge flap |
| 基金项目: |
|
| 摘要点击次数: 3427 |
| 全文下载次数: 3205 |
| 中文摘要: |
| 尾缘襟翼（TEF）因其对翼型气动特性的调控能力，被认为是降低叶片疲劳和局部载荷最具可行性的气动控制部件。对TEF进行建模，采用Xfoil和CFD软件分析了TEF对翼型气动特性的影响及其机理，并从叶素理论角度对变化来流下TEF的减载效果进行了验证，结果表明：TEF位于不同摆角时翼型升阻力系数均有不同程度的变化，TEF可有效实现对翼型气动特性的主动控制；TEF摆动改变了翼型表面的静压分布和流动状态，进而对翼型升阻力和失速攻角产生影响；TEF可快速有效降低风速突然增加后的叶素受力，进而控制并减小叶片载荷。 |
| 英文摘要: |
| Due to the good control ability of airfoil aerodynamic performance, trailing edge flap (TEF) is considered as the most feasible pneumatic control component for wind turbine, which can reduce the blade fatigue and local load. The effect of TEF on airfoil aerodynamic performance and its influence mechanism were analyzed using Xfoil and CFD software to construct its model and the TEF's capability of reducing load under changed flow conditions was verified using blade element theory. The conclusions could be drawn that different levels of variation for lift coefficient and drag coefficient were observed when TEF was at different tilt angles. Active control on airfoil aerodynamic performance could be achieved by TEF. TEF could change the flow state and static pressure distribution on the surface of the airfoil and thus changed the airfoil lift and drag forces as well as the stall angle of attack. TEF could reduce the force of blade element in a gust of wind quickly and efficiently. And it could control the blade load. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
