考虑非稳定大气边界层的风力机输出特性研究
Study of Wind Turbine Output Characteristics Considering Unsteady Atmospheric Boundary Layer
张振凯 1陈银鹏 2杨英健 3贾彦1
作者信息
- 1. 内蒙古工业大学能源与动力工程学院,呼和浩特 010051
- 2. 华电电力科学研究院有限公司,杭州 310030
- 3. 中国船舶集团海装风电股份有限公司,重庆 401122
- 折叠
摘要
本文基于CFD方法,从不同性质大气边界层中风力机的输出特性进行研究,对中性和非中性大气边界层环境下风力机的输出特性如功率、尾流速度等进行分析.针对所预选风力机的基本参数,在保证轮毂处风速为额定风速的基础上,通过改变速度分布及温度来构建入口边界函数,而后进行风力机CFD分析.结果表明中性大气边界层条件下在距风力机下游15D处恢复到了来流速度的89％,而不稳定大气边界层条件下的尾流速度已完全恢复.此外,不同性质大气边界层的整体尾流恢复有所差异,在近尾流区及过渡区尾流恢复程度基本相同,在远尾流区非中性大气边界层条件下的速度分布高于中性大气边界层.
Abstract
Based on the CFD method,this paper develops the output characteristics of wind tur-bines in different atmospheric boundary layers,and analyzes the output characteristics of wind turbines,such as power and wake velocity,in both neutral and non-neutral atmospheric boundary layer environments.Based on the basic parameters of the pre-selected wind turbine,the inlet bound-ary function is constructed by changing the velocity distribution and temperature on the basis of ensuring that the wind speed at the hub is the rated wind speed,and then the CFD analysis of the wind turbine is carried out.The results show that 89％of the incoming velocity is recovered at 15D downstream from the wind turbine under neutral atmospheric boundary layer conditions,while the wake velocity is fully recovered under unstable atmospheric boundary layer conditions.In addition,the overall wake recovery varies among different properties of the atmospheric boundary layer,and the degree of wake recovery is basically the same in the near wake region and the transition region,and the velocity distribution is higher than that in the neutral atmospheric boundary layer under the non-neutral atmospheric boundary layer condition in the far wake region.
关键词
非稳定大气边界层/风力机尾流/风力机气动性能Key words
unsteady atmospheric boundary layer/wind turbine wake/wind turbine aerodynamic performance引用本文复制引用
基金项目
内蒙古自治区自然科学基金重点项目(2023ZD20)
内蒙古自治区科技厅科技计划项目(2021GG0336)
出版年
2024
NETL
NSTL
万方数据