...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Wind Energy >A new stall delay algorithm for predicting the aerodynamics loads on wind turbine blades for axial and yawed conditions
【24h】

A new stall delay algorithm for predicting the aerodynamics loads on wind turbine blades for axial and yawed conditions

机译：一种新的失速延迟算法，用于预测风力涡轮机叶片在轴向和偏航条件下的空气动力负荷

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Stall delay is a complicated phenomenon that has gained for many years the attention of industry and academics in the fields of helicopter and wind turbine aerodynamics. Since most of the potential flow theories still rely on the use of 2D aerofoil data for simulating loads on a rotating blade, less degree of accuracy is expected because of 3D rotational effects. In this work, a new model for correcting the 2D steady aerodynamic data for 3D effects is presented. The model can reduce the uncertainty in the blade design process and, subsequently, make wind turbines more cost-effective. This model combines the stall delay model of Corrigan and Schillings, a modified version of an inviscid stall delay model, a new modification factor to account for the effect of the angle of attack changes and a new tip loss factor. Furthermore, the model applies the use of the separation factor of Du and Selig to evaluate the area on the rotor disc where stall delay is most prominent. The new stall delay model was embedded in a free-wake vortex model to estimate the aerodynamic loads on the National Renewable Energy Laboratory Phase VI rotor blades consisting of the S809 aerofoil sections. The results in this study confirm the validity of the 3D corrections by the proposed new model under both axial and yawed flow conditions. Copyright (c) 2017 John Wiley & Sons, Ltd.
机译：失速延迟是一种复杂的现象，多年来一直引起直升机和风力涡轮机空气动力学领域的业界和学者的关注。由于大多数潜在的流动理论仍然依赖于使用2D翼型数据来模拟旋转叶片上的载荷，因此由于3D旋转效应，预计精度会降低。在这项工作中，提出了一种用于校正3D效果的2D稳定空气动力学数据的新模型。该模型可以减少叶片设计过程中的不确定性，从而使风力涡轮机更具成本效益。该模型结合了Corrigan和Schillings的失速延迟模型，无粘性失速延迟模型的改进版本，考虑了迎角变化影响的新修正因子和新的叶尖损失因子。此外，该模型利用Du和Selig的分离因子来评估转子盘上失速延迟最明显的区域。新的失速延迟模型被嵌入到自由苏醒涡旋模型中，以估算由S809翼型截面组成的国家可再生能源实验室第六期转子叶片上的空气动力负荷。这项研究的结果证实了所提出的新模型在轴向和偏航条件下进行3D校正的有效性。版权所有（c）2017 John Wiley＆Sons，Ltd.

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号