| 风力机叶尖涡特性及其控制 |
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| 引用本文： | 马兴宇,明晓.风力机叶尖涡特性及其控制[J].南京航空航天大学学报,2011,43(5). |
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| 作者姓名： | 马兴宇 明晓 |
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| 作者单位： | 南京航空航天大学航空宇航学院; |
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| 基金项目： | 国家重点基础研究发展计划(“九七三”计划)(2007CB714600)资助项目; 江苏高校优势学科建设工程资助项目 |
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| 摘 要： | 通过数值模拟研究了风力机叶片尖部尾涡强度和控制方法。在叶片尖部设计了不同倾斜角的漩涡扩散器来控制叶尖涡,分析了风力机叶片尖部漩涡特征和叶片表面压力分布情况。同时,研究了叶尖涡强度随风轮尖速比变化规律。研究结果表明,叶尖涡扩散器能够提高叶尖涡涡核的总压,削弱其漩涡强度。在粘性作用下,风力机尾流漩涡耗散更快,可有效地削弱翼尖尾涡的强度,提高叶片效率。
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| 关 键 词： | 叶尖涡 涡扩散器 流动控制 数值模拟 |
Characteristics and Control of Blade Tip Vortex of Wind Turbine |
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| Ma Xingyu,Ming Xiao.Characteristics and Control of Blade Tip Vortex of Wind Turbine[J].Journal of Nanjing University of Aeronautics & Astronautics,2011,43(5). |
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| Authors: | Ma Xingyu Ming Xiao |
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| Institution: | Ma Xingyu,Ming Xiao(College of Aerospace Engineering,Nanjing University of Aeronautics & Astronautics,Nanjing,210016,China) |
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| Abstract: | The vortex of a wind turbine blade tip is studied,and a control device is designed by numerical simulation.Vortex diffusers with different pitch angles are installed at the blade tips to control the vortex.The characteristics of the blade-tip vortex and the surface pressure distributions along the blade are analyzed.Moreover,the variation of the flow characteristic of vortex in different tip speed ratios is analyzed.Results show that the strength of blade-tip vortex can be reduced by the control of vortex d... |
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| Keywords: | blade-tip vortex vortex diffuser flow control numerical simulation |
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