摘要
基于叶素-动量理论和简单的扩散器效率计算方法,建立了一种用于低风速场景的扩散型风力机模型,该模型包含了风力机来流风速、叶轮平面处风速、扩散器出口风速、尾流风速、风力机叶片荷载、叶素参数及风能利用系数之间的关联关系。针对某型号扩散型风力机,利用该模型开展了叶片结构参数的优化设计,并通过Fluent软件对优化设计前、后的风力机流场进行了仿真模拟分析。分析结果显示:在额定工况下,优化设计前、后扩散型风力机的叶尖速度、叶轮转矩、风能利用系数都得到一定程度的提升。以期该研究结果可为小尺寸低风速风电机组的叶片设计提供可行方向。
Based on the blade element-momentum theory and a simple diffuser efficiency calculation method,this paper establishes a diffuser augmented wind turbine model for low wind speed scenarios.The model includes the correlation between the wind turbine incoming wind speed,impeller plane wind speed,diffuser outlet wind speed,wake wind speed,load of wind turbine blade,blade element parameters,and wind energy utilization coefficient.For a certain type of diffuser augmented wind turbine,the optimization design of blade structural parameters is carried out using this model,and the flow field of the wind turbine before and after the optimization design is simulated and verified using Fluent software.The analylsis results show that under rated operating conditions,the blade tip speed,impeller torque,and wind energy utilization coefficient of the diffuser augmented wind turbine before and after optimization design have been improved to a certain extent.The research results are expected to provide feasible directions for the blade design of small-sized low wind speed wind turbines.
作者
张子英
鲁中间
高伟龙
Zhang Ziying;Lu Zhongjian;Gao Weilong(Mechanical and Electronic Engineering Department,Shanxi Institute of Energy,Taiyuan 030006,China;School of Mechanical electronic&Information Engineering,China University of Mining and Technology(Beijing),Beijing 100083;Qingdao Anhua New Energy Equipment Co.,Ltd,Qingdao 266000,China;Norendar International Ltd,Shijiazhuang 050011,China)
出处
《太阳能》
2023年第6期89-96,共8页
Solar Energy
基金
青岛创业创新领军人才计划项目(18-1-2-20-zhc)。
关键词
扩散型风力机
扩散器
叶素-动量理论
叶片
优化
风能利用系数
diffuser augmented wind turbines
diffuser
blade element-momentum theory
blade
optimization
wind energy utilization coefficient
