Bolund岛对风场流动影响的数值模拟研究  

Numerical Simulation of Bolund Island s Influence on Wind Flow

作　　者：李德顺[1,2,3] 董彦斌 傅学刚 何婷 LI De-shun;DONG Yan-bin;FU Xue-gang;HE Ting(College of Energy and Power Engineering,Lanzhou University of Technology,Lanzhou 730050,China;Gansu Wind Turbine Engineering Technology Research Center,Lanzhou 730050,China;Gansu Key Laboratory of Fluid Machinery and Systems,Lanzhou 730050,China)

机构地区：[1]兰州理工大学能源与动力工程学院,甘肃兰州730050 [2]甘肃省风力机工程技术研究中心,甘肃兰州730050 [3]甘肃省流体机械及系统重点实验室,甘肃兰州730050

出　　处：《液压气动与密封》2021年第5期6-9,共4页Hydraulics Pneumatics & Seals

基　　金：国家自然科学基金(51766009,51566011);国家基础研究计划(973计划)(2014CB046201)。

摘　　要：为了更准确、真实地描述复杂地形风场流场特性,该文以Ris?实验室开展的Bolund岛实验结果为依据,采用雷诺时均(RANS)与大涡模拟(LES)方法对Bolund岛进行数值模拟。研究表明:针对Bolund岛的数值模拟,在Line B特征线上5 m高度处模拟值比2 m处更接近实验值,在岛前位置模拟结果比岛后位置模拟结果更准确;LES方法能够有效揭示Bolund岛地形周围流动的绕流特征和尾流区涡特征。In order to more accurately and realistically describe the characteristics of the wind field flow in complex terrain,this paper uses the Reynolds time average(RANS)and large eddy simulation(LES)methods to numerically simulate Bolund island based on the Bolund island experiment results carried out by the Ris laboratory.The study shows that the simulated value of Bolund island is closer to the experimental value at the height of 5 m on the Line B characteristic Line than at the height of 2 m.The simulation results of the pre-island position are more accurate than those of the post-island position.Moreover,LES method can effectively reveal the characteristics of flow around the topography of Bolund island and the vortex characteristics of wake area.

关 键 词：Bolund岛 湍流风场 大涡模拟 复杂地形 

分 类 号：TH137[机械工程—机械制造及自动化] TH312