中国电机工程学报2025，Vol.45Issue(8)：3079-3091,中插19,14.DOI:10.13334/j.0258-8013.pcsee.231423
切变和变风向入流对偏航风力机气动特性的影响研究
Study on the Influence of Wind Shear and Wind Direction Variation Inflow on Aerodynamic Characteristics of Yawed Wind Turbines
摘要
Abstract
The wind shear and variable wind direction are selected,and a computational fluid dynamics(CFD)model for dynamic inflow of the entire wind turbine is established using the double-nested sliding grid method.The variation characteristics of the yawed wind turbine are analyzed.The results show that shear inflow has little effect on the mean torque and axial thrust but increases their relative amplitude,which is further amplified under yaw conditions.Using measured rotor speed data,uniform variable wind direction simulations are performed.Compared to static yaw at the same angle,the mean torque ratio is higher at the end of wind direction variation but lower once speed stabilizes,while the relative amplitude exhibits the opposite trend.Yaw causes the axial high/low load zone to form a'C'shape,whereas the tangential load distribution resembles a fan or pea shape.Shear inflow shifts the high/low load regions toward the upper/lower half-plane of the rotor.Compared to dynamic yaw at constant rotor speed,variable-speed dynamic yaw yields higher mean loads and fluctuation frequencies in the blade root region,while other regions show lower mean values but greater amplitudes.These findings provide theoretical insights for fatigue design of wind turbines operating in natural wind conditions.关键词
风力机/自然风况/气动特性/偏航/计算流体力学数值模拟Key words
wind turbine/natural wind condition/aerodynamic characteristics/yaw/computational fluid dynamics numerical simulation分类
能源科技引用本文复制引用
汪建文,赵爽,白叶飞,张立茹,马剑龙,张建伟,闫思佳..切变和变风向入流对偏航风力机气动特性的影响研究[J].中国电机工程学报,2025,45(8):3079-3091,中插19,14.基金项目
国家自然科学基金项目(52066014) （52066014）
内蒙古自治区高等学校科学研究项目(NJZZ23085) （NJZZ23085）
内蒙古自治区科技计划项目(2021GG0436).Project Supported by National Natural Science Foundation of China(52066014) （2021GG0436）
Universities Scientific Research Project of Inner Mongolia Autonomous Region(NJZZ23085) （NJZZ23085）
Science and Technology Planning Project of Inner Mongolia Autonomous Region(2021GG0436). （2021GG0436）
