知识导航
资源分类

大型水平轴风力机塔影效应特性研究

大型水平轴风力机塔影效应特性研究

Characteristic Study on Tower Shadow Effect of Large-scale Horizontal-axis Wind Turbines

Characteristic Study on Tower Shadow Effect of Large-scale Horizontal-axis Wind Turbines

doi:
摘要:
为了研究塔影效应对大型水平轴风力机的影响,选取NREL 5 MW风力机作为研究对象,利用Fluent软件对单台风力机的不同工况进行数值模拟.结果表明:塔影效应的影响主要发生在叶片方位角为140°~210°的时域内;当叶片扫掠过塔筒时,其不同周向位置的转矩和轴向推力出现大幅波动,转矩的相对波动幅度随来流风速的减小而减小,叶片所受轴向推力的相对波动幅度随来流风速的减小而增大;由于叶片尖部周向线速度较大,在研究塔影效应时需考虑叶轮旋转效应的影响;对于风力机尾迹流场,旋转半径越大处,塔筒造成的尾迹越明显,其长度约为叶轮直径的2倍.
Abstract:
To study the tower shadow effect on the performance of large-scale horizontal-axis wind turbines,numerical simulations were carried out on a single wind turbine using Fluent software by taking a NREL 5 MW wind turbine as the object of study.Results show that the tower shadow effect mainly occurs in the time domain from azimuth angle 140° to 210°.When the blades are rotating,the tower shadow would cause a significant fluctuation in the torque and axial thrust at different circumferential positions.With the rise of wind speed,the relative fluctuation of torque increases,while that of axial thrust reduces.For large-scale wind turbines,blade tips are working at a high linear velocity,when the rotation effect of rotor should be considered in the process of studying the tower shadow effect.For the wake formed in the downwind of rotor,the larger the rotating radius is,the more obvious the wake will be,and its length is about twice the rotor diameter.
作者 胡丹梅 潘扬 张建平
Author: HU Danmei PAN Yang ZHANG Jianping
作者单位 上海电力学院能源与机械工程学院,上海,200090
期 刊: 动力工程学报 ISTIC EI SCI PKU CSSCI
Journal: Journal Of Chinese Society Of Power Engineering
年,卷(期) 2018, 38(3)
分类号 TK83
关键词: 风力机 知识脉络 塔影效应 知识脉络 转矩 知识脉络 轴向推力 知识脉络 尾迹 知识脉络
Keywords: wind turbine tower shadow effect torque axial thrust wake
机标分类号
基金项目 国家自然科学基金资助项目,江苏省水利动力工程重点实验室资助项目,中国电力科学研究院资助项目,上海市教委科研创新重点资助项目
参考文献和引证文献
返回顶部参考文献
返回顶部引证文献
返回顶部本文读者也读过
返回顶部相似文献
返回顶部相关博文

知识产权声明| 服务承诺| 联系我们| 人才招聘| 客户服务| 关于我们

京ICP证:010071  互联网出版许可证:新出网证(京)字042号  京公网安备11010802020237号
万方数据知识服务平台--国家科技支撑计划资助项目(编号:2006BAH03B01)©北京万方数据股份有限公司  万方数据电子出版社