| 三维旋转效应对叶片非定常气动特性的影响 |
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| 引用本文： | 伍艳,王同光. 三维旋转效应对叶片非定常气动特性的影响[J]. 南京航空航天大学学报, 2005, 37(2): 178-182 |
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| 作者姓名： | 伍艳 王同光 |
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| 作者单位： | 1. 南京航空航天大学航空宇航学院,南京,210016;空军第一航空学院,信阳,464000
2. 南京航空航天大学航空宇航学院,南京,210016 |
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| 基金项目： | 航空科学基金 (0 2 A5 2 0 0 3 )资助项目。 |
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| 摘 要： | 在旋转的作用下，流动分离向下游延迟，结果大大改变了风力机叶片的气动特性，这种由旋转所带来的影响被称为三维旋转效应。本文以叶片表面边界层理论分析的结果为基础，给出了三维旋转效应对气流分离影响的解析关系，使得这一复杂问题可以方便地解决，为准确计算旋转叶片的气动栽荷提供基础。通过算例表明，当这一三维旋转效应应用于叶片非定常气动特性计算时，能大大改善计算结果。
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| 关 键 词： | 三维旋转效应 流动分离 分离点延迟 边界层 非定常空气动力学 动态失速 |
| 文章编号： | 1005-2615(2005)02-0178-05 |
| 修稿时间： | 2004-05-26 |
Calculation of Three-Dimensional Rotational Effect on Blade Aerodynamic Characteristics |
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| WU Yan,WANG Tong-guang. Calculation of Three-Dimensional Rotational Effect on Blade Aerodynamic Characteristics[J]. Journal of Nanjing University of Aeronautics & Astronautics, 2005, 37(2): 178-182 |
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| Authors: | WU Yan WANG Tong-guang |
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| Affiliation: | WU Yan 1,2,WANG Tong-guang1 |
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| Abstract: | The flow separation is delayed under rotation action, its result changes the blade aerodynamic characteristics greatly compared to its non-rotating counterpart. This phenomenon caused by the rotation is called three-dimensional (3-D) rotational effect. Using the results of the 3-D integral boundary layer equations, this paper gives an analytical relationship between the 3-D rotational effect and the flow separation. It lays a foundation for accurately calculating the aerodynamic loads on rotating blades. Calculational results of unsteady loads on the wind turbine blade show that the calculation is improved by the 3-D rotational effect. |
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| Keywords: | three-dimensional rotational effect flow separation separation delay boundary layer unsteady aerodynamics dynamic stall |
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