摘要
针对二维尾流模型计算精度不高的问题,基于Frandsen模型和径向尾流速度亏损呈高斯分布假设,提出一种2D Frandsen模型,该模型同时考虑环境湍流强度和地表粗糙度对尾流的影响。通过2D Frandsen模型对单台风力机尾流场进行模拟,并将模拟结果与风场实测数据和风洞实验数据进行对比,结果表明,该文的2D Frandsen模型可准确预测多种工况下尾流区域的各点风速,在径向分布上更符合真实流场,计算精度优于修正Frandsen模型和2D_k Jensen模型。
Due to the inaccuracy of 2D wake analytical models,a new 2D Frandsen model was put forward according to the original Frandsen model and the assumption of Gaussian distribution for the radial velocity deficit in wake. The influence of ambient turbulence intensity and surface roughness were taken into account. The wake flow of a single wind turbine was simulated and the results were validated against the measured data in wind farm and the experimental data in wind tunnel.The results show that the new 2D Frandsen model can accurately predict the velocity distribution in the wake region for varying conditions,which is more coincident with the real flow field. The new 2D Frandsen model is found superior to the modified Frandsen model and the 2D_k Jensen model.
作者
陈晨
许昌
李林敏
薛飞飞
潘航平
雷娇
Chen Chen;Xu Chang;Li Linmin;Xue Feifei;Pan Hangping;Lei Jiao(College of Energy and Electrical Engineering,Hohai University,Nanjing 211100,China;College of Water Conservancy and Hydropower Engineering,Hohai University,Nanjing 210098,China)
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2020年第5期121-128,共8页
Acta Energiae Solaris Sinica
基金
国家自然科学基金委员会-雅砻江流域水电开发有限公司雅砻江联合基金(U1865101)
中央高校基本科研业务费专项资金(2017B42314)
江苏高校优势学科建设工程(PAPD)。
