• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2020, Vol. 56 ›› Issue (4): 85-94.doi: 10.3901/JME.2020.04.085

• 可再生能源与工程热物理 • 上一篇    下一篇

典型山丘地形与风力机诱导涡流耦合演变规律

史俊杰1, 许昌1, 雷娇1, 李林敏1, 薛飞飞2, 韩星星2   

  1. 1. 河海大学能源与电气学院 南京 211100;
    2. 河海大学水利水电学院 南京 211100
  • 收稿日期:2019-04-13 修回日期:2019-11-06 出版日期:2020-02-20 发布日期:2020-04-23
  • 通讯作者: 许昌(通信作者),男,1972年出生,博士,教授,博士研究生导师。主要研究方向为风电场空气动力学和优化控制。E-mail:zhuifengxu@163.com
  • 作者简介:史俊杰,男,1993年出生。主要研究方向为风电场微观选址和空气动力学。E-mail:snvren@163.com
  • 基金资助:
    中丹国际科技合作专项(2014DFG62530)和国家自然科学基金(U1865101)资助项目。

Evolution Law of Coupling Evolvement Mechanism of Vortex Field Induced by Typical Hilly Terrain and Wind Turbine

SHI Junjie1, XU Chang1, LEI Jiao1, LI Linmin1, XUE Feifei2, HAN Xingxing2   

  1. 1. College of Energy and Electrical Engineering, Hohai University, Nanjing 211100;
    2. College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing 211100
  • Received:2019-04-13 Revised:2019-11-06 Online:2020-02-20 Published:2020-04-23

摘要: 风电场空气动力场是以涡流形式产生和演变,采用能够提供涡流演变细节特征的大涡模拟(Large eddy simulation,LES)方法模拟典型山丘地形的涡流结构,通过风洞试验数据验证湍动能输运(Kinetic energy transport,KET)模型模拟结果的准确性,并探讨不同入流风速对山丘地形风电场瞬时特性的影响。随后探索地形诱导涡与风力机尾涡耦合的时空演化机制,发现单台风力机与两台并列风力机工况的尾涡结构的耦合演变机理存在差异,单台风力机工况是由于二次涡的形成及其与尾涡的耦合作用,两台并列风力机则归因于二次涡与尾涡的耦合及两机组间涡流耦合的共同作用。针对复杂地形涡流演变的研究可以为风电场规划设计与运行提供参考。

关键词: 致动盘, 涡流耦合, 大涡模拟(Large eddy simulation,LES), 数值模拟

Abstract: The aerodynamics field of wind farm is generated and evolved in the form of vortex. Large eddy simulation(LES) method, which can provide evolution characteristics of vortex, is used to simulate the vortex structure of typical hilly terrain. The accuracy of the simulation results of kinetic energy transport(KET) model is verified through wind tunnel test data, and the influence of different inflow wind speeds on the instantaneous characteristics of wind field of hilly terrain is discussed. Subsequently, the temporal and spatial evolution mechanism of the coupling between terrain-induced vortex and wind turbine wake vortex is explored. It is found that the coupling evolution mechanism of the wake vortex structure of single wind turbine and two parallel wind turbines is different. The mechanism of single wind turbine is due to the formation of secondary vortex and its coupling with wake vortex, while the two parallel wind turbines are due to the coupling of secondary vortex and wake vortex and the joint effect of vortex coupling between the two units. The research on evolution of vortex in complex terrain can provide reference for planning design and operation of wind farms.

Key words: actuator disk, vortex coupling, large eddy simulation (LES), numerical simulation

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