摘要
针对现有的Jensen尾流模型分析水平轴风力机(HAWTs)的方法,对采用经典Jensen尾流模型时恒定的风速亏损和尾流衰减系数进行改进,提出基于改进型Jensen尾流模型对新型Senegal式垂直轴风力机(VAWTs)尾流分析的新方法。结合流场分析对该新型风力机进行尾流数值模拟,得出了基于改进的Jensen尾流模型的尾流参数二维分布的变化规律。由于尾流分布具有三维性,二维尾流分布不能完全反映尾流特性,因此还得到了尾流参数三维分布。全面地分析了单台VAWT的尾流特性,不仅为进一步的多台VAWTs尾流分析和风电场风力机排布研究打好基础,而且为该类Senegal式VAWT的尾流研究提供了借鉴和参考。
According to wake analysis of horizontal axis wind turbine(HAWT)based on existing Jensen wake model,a novel method of wake analysis is proposed for a Senegal style vertical axis wind turbine(VAWT)based on improved Jensen wake model.Combined with flow field analysis,the numerical simulation of the novel wind turbine is carried out,Based on the improved Jensen wake model,the change trend of the two-dimensional wake distribution is obtained.The two-dimensional wake distribution cannot fully reflect the wake characteristics due to the three-dimensional characteristics of wake distribution.Furthermore,the three-dimensional distribution of the wake parameters is also obtained.In this paper,the wake characteristics of a single VAWT are comprehensively analyzed,which not only become a good foundation for further analysis of multiple VAWT wakes and the arrangement of wind turbines in wind farms,but also offer a reference for the wake study of Senegal VAWTs.
作者
李争
齐伟强
韩瑞华
LI Zheng;QI Wei-qiang;HAN Rui-hua(School of Electrical Engineering,Hebei University of Science and Technology,Hebei Shijiazhuang050018,China)
出处
《机械设计与制造》
北大核心
2021年第3期57-62,67,共7页
Machinery Design & Manufacture
基金
国家自然科学基金资助项目(51577048,51877070)
河北省自然科学基金资助项目(E2018208155)
河北省留学人员科技活动项目择优资助项目(C2015003044)
河北省高等学校科学技术研究重点项目(ZD2018228)。
