|
| 翼型前缘对风力机翼型气动性能的影响 |
| Influence of airfoil leading edge on aerodynamic performance of the wind turbine airfoil |
| 投稿时间：2018-04-10 |
| DOI：10.13259/j.cnki.eri.2020.03.001 |
| 中文关键词: 风力机 翼型 参数化曲线 前缘修改 气动性能 |
| 英文关键词:wind turbine airfoil parametric curve modification of leading edge aerodynamic performance |
| 基金项目:国家自然科学基金资助项目（51676131） |
|
| 摘要点击次数: 2379 |
| 全文下载次数: 3605 |
| 中文摘要: |
| 基于翼型参数化方法对翼型S809进行两类不同的前缘修改，采用翼型设计分析软件Xfoil对修改前、后的翼型进行气动性能计算分析，并采用计算流体力学（CFD）数值模拟方法进行流场特性分析。结果表明：翼型前缘下弯使得翼型在失速区升力系数增大，阻力系数减小，俯仰力矩系数减小，转捩现象延迟，翼型前缘上弯对气动性能的影响与之相反；翼型前缘上弯和下弯使得翼型表面压力系数分布均匀，吸力面及压力面压力系数增大；翼型前缘下弯能够抑制流动分离，抑制涡的形成，延迟翼型失速，翼型前缘上弯对翼型流场特性的影响则与之相反。 |
| 英文摘要: |
| The S809 airfoil was modified with 4 different leading edges by airfoil parameterization, whose aerodynamic performance was calculated by the analysis and design software Xfoil before and after modification to study the influence of leading edge on aerodynamic performance of the airfoil and analyze the flow field characteristics using CFD. The results showed that the lower bending of airfoil leading edge caused the increased lift coefficient, decreased drag coefficient, and decreased pitching moment coefficient. And the transition delayed. But the opposite aerodynamic performance was observed for the upper bending of airfoil leading edge. Pressure coefficient distribution was uniform, which was caused by both the upper and lower blending of airfoil leading edge. The pressure coefficients on suction surface and pressure surface increased. The lower bending of airfoil leading edge could inhibit the flow separation and the formation of vortex, and the airfoil stall delayed. However, the upper bending of airfoil leading edge had an opposite impact on the flow field characteristics of the airfoil. |
| HTML 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
