Unsteady characteristics of wake effect for multiple wind turbines under gust wind condition

CAO Jiufa; SONG Quanmin; WANG Chaoqun; ZHU Weijun; KE Shitang

doi:10.7638/kqdlxxb-2021.0309

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Unsteady characteristics of wake effect for multiple wind turbines under gust wind condition

更新时间：2026-05-28

- Unsteady characteristics of wake effect for multiple wind turbines under gust wind condition
- Vol. 40, Issue 4, Pages: 247-255(2022)
- 作者机构：
  
  1. 扬州大学电气与能源动力工程学院,扬州,225127
  2. 丹麦科技大学风能系，丹麦哥本哈根灵比,2800
  3. 南京航空航天大学民航学院,南京,210016
- 作者简介：
- 基金信息：
- DOI：10.7638/kqdlxxb-2021.0309
  CLC： TM315
- Published：2022
- 稿件说明：
移动端阅览
曹九发, 宋佺珉, 王超群, 等. 阵风工况下多台风力机尾流效应的非定常特性[J]. 空气动力学学报, 2022, 40(4): 247−255.

CAO Jiufa, SONG Quanmin, WANG Chaoqun, et al. Unsteady characteristics of wake effect for multiple wind turbines under gust wind condition[J]. 2022, 40(4): 247-255.
曹九发, 宋佺珉, 王超群, 等. 阵风工况下多台风力机尾流效应的非定常特性[J]. 空气动力学学报, 2022, 40(4): 247−255. DOI： 10.7638/kqdlxxb-2021.0309

CAO Jiufa, SONG Quanmin, WANG Chaoqun, et al. Unsteady characteristics of wake effect for multiple wind turbines under gust wind condition[J]. 2022, 40(4): 247-255. DOI： 10.7638/kqdlxxb-2021.0309.

摘要

风力机实际运行中入流工况复杂，风电场中多台风力机之间的尾流效应呈现高度非定常特性，下游风力机的气动载荷亦会因此受到严重影响。本文开展了阵风工况下多台风力机尾流效应的非定常特性研究。首先，建立了LES耦合致动线模型方法，以Nibe风力机为算例验证了方法的可行性和准确性，并研究了单台风力机尾流速度的发展规律；然后，以NREL 5 MW大型风力机为例，开展了多台风力机在阵风工况下的数值模拟，获得了非定常尾流效应和尾流干扰特性，揭示了尾流中阵风涡系的发展演变规律；最后，分析总结了阵风工况下的风力机气动载荷特性。研究内容及结论对风电场布局和风力机载荷强度设计具有指导意义。

Abstract

The actual operating conditions of wind turbines are complex

which leads to strong unsteady characteristics between wind turbines in the wind farm

and causes unsteady aerodynamic load of the upstream and downstream wind turbines due to the unsteady wake effect. In this study

the unsteady characteristics for the wake effect of multiple wind turbines are investigated under the gust wind condition. Firstly

an unsteady wake simulation method is established by coupling the LES (large eddge simulation) and the actuator line model

and the feasibility and accuracy are verified using the Nibe wind turbine. Meanwhile

the development characteristics of a single wind turbine wake is unveiled. Then

taking the NREL 5 MW wind turbine as an example

numerical simulations are performed for multiple wind turbines under the gust wind condition. The characteristics of unsteady wake effects and the development mechanism of the wake vortex structures under the gust wind condition are discovered. Finally

aerodynamic load characteristics of the upstream and downstream wind turbines are analyzed and summarized under the gust wind condition. The present analyses and results are significant in guiding the wind farm layout and wind turbine design.

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references

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