基于格子玻尔兹曼方法的风力机尾流特性研究  

Study on Wake Characteristics of Wind Turbine Based on Lattice Boltzmann Method

作　　者：薛飞飞[1] 许昌[1] 黄海琴 韩星星[1] SHEN Wenzhong 王金城 XUE Feifei;XU Chang;HUANG Haiqin;HAN Xingxing;SHEN Wenzhong;WANG Jincheng(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,Jiangsu Province,China;Power China Hua Dong Engineering Corporation Limited,Hangzhou 311122,Zhejiang Province,China;Department of Wind Energy,Technical University of Denmark,Lyngby-2800,Denmark)

机构地区：[1]河海大学能源与电气学院,江苏省南京市211100 [2]中国电建华东勘测设计研究院,浙江省杭州市311122 [3]丹麦科技大学风能系,Lyngby-2800,Denmark

出　　处：《中国电机工程学报》2022年第12期4352-4362,共11页Proceedings of the CSEE

基　　金：政府间国际科技创新合作重点专项(2019YFE0104800);国家自然科学基金项目(52106238,U1865101)。

摘　　要：为研究风力机尾流特性,采用基于格子玻尔兹曼方法(lattice Boltzmann method,LBM)和大涡模拟方法(large eddy simulation,LES),通过壁面自适应局部湍流模型数值模拟New MEXICO(model rotor experiments in controlled conditions)风力机尾流并验证模型。然后研究不同入流湍流强度及动态入流条件下NREL 5MW(National renewable energy laboratory)风力机尾流结构。结果发现:LBM模型准确模拟了实验风力机轴向和径向速度分量及涡量分布,但是叶片中段附着涡耗散偏快;高湍流入流工况下,叶尖涡和叶根涡更早发生破坏;动态入流工况下,风力机尾涡耗散速度随着入流风速增加而变慢,螺旋结构的涡间距增大,尾涡持续距离变长,尾流膨胀效应减弱。入流风速变化10s后稳定,风力机的推力系数保持剧烈波动。To study the wake characteristics of wind turbines,a numerical method based on lattice Boltzmann method(LBM) and the large eddy simulation(LES) method were used,and the wall-adapting local eddy(WALE) model was applied to simulate the wake of the New MEXICO wind turbine and investigate the model.Meanwhile,the wake structure of the NREL 5MW wind turbine under different turbulence intensities and dynamic inflow conditions of inflow was studied.The results show that the LBM method accurately simulates the velocity component of the experimental turbine and predicts the vortices,but the attached vortices in the middle of the blade dissipate faster.Under high turbulence inflow conditions,the tip vortices and root vortices of the wind turbine are destroyed earlier.Under dynamic inflow conditions,the wake vortices of the turbine dissipate slowly as the inflow velocity increases.In addition,the distance between the wake vortices increases,the continuous distance becomes longer,and the wake expansion effect is weakened.After the inflow wind speed changes for 10s,the thrust coefficient continues to fluctuate sharply.

关 键 词：格子玻尔兹曼方法 风力机 尾流 动态入流 湍流 涡 

分 类 号：TM614[电气工程—电力系统及自动化]