华中科技大学学报（自然科学版）2025，Vol.53Issue(7)：24-30,7.DOI:10.13245/j.hust.250074
基于POD与SPOD方法的风力机尾迹蜿蜒特性
Wind turbine wake meanderings based on POD and SPOD methods
摘要
Abstract
To insight into the impact of vortex structures in the wind turbine wake on the meandering motions of wakes,large eddy simulation(LES)based on the actuator line model was employed to numerically simulate the wake of a NREL 5.0 MW wind turbine under uniform inflow conditions.The wake structures were thoroughly analyzed using proper orthogonal decomposition(POD)and spectral proper orthogonal decomposition(SPOD)methods.The results of the large eddy simulation revealed that the motions of the wind turbine wake originate from the amplification of flow structures,with the characteristic frequency of wake meandering remaining constant along the downstream direction.POD decomposition indicated that the motion of the wind turbine wake is predominantly influenced by two pairs of counter-rotating vortex structures,and the frequency of wake meandering can be accurately described by the time-varying characteristics of these vortices.The SPOD decomposition results demonstrate that the energy of the wind turbine wake is concentrated primarily in flow structures near the characteristic frequency of meandering.Beyond the characteristic frequency,the energy of flow structures sharply decreases.This study aims to provide a profound understanding of the mechanisms behind wind turbine wake meandering and offer valuable insights for optimizing wind farm layout to mitigate the effects of wake meandering.关键词
风力机/尾迹蜿蜒/流动结构/本征正交分解方法/谱本征正交分解方法Key words
wind turbine/wake meandering/flow structures/proper orthogonal decomposition/spectral proper orthogonal decomposition分类
能源科技引用本文复制引用
王燕,刘国良,张福强,黄豪杰..基于POD与SPOD方法的风力机尾迹蜿蜒特性[J].华中科技大学学报（自然科学版）,2025,53(7):24-30,7.基金项目
国家自然科学基金资助项目(52276197,11902131) （52276197,11902131）
甘肃省重点研发计划-工业类资助项目(23YFGA0069). （23YFGA0069）
