Bolund岛的DES数值模拟研究  

Numerical simulation of the Flow Over Bolund Based on DES

作　　者：梁思超[1] 张晓东[1] 康顺[1,2] 褚瑛琼 王吉远 范忠瑶 赵永锋 

机构地区：[1]华北电力大学电站设备状态监测与控制教育部重点实验室,北京102206 [2]西安现代控制技术研究所,西安710065 [3]中国大唐集团新能源股份有限公司试验研究院,北京100053 [4]龙源(北京)风电工程设计咨询有限公司,北京100034

出　　处：《工程热物理学报》2015年第4期761-765,共5页Journal of Engineering Thermophysics

基　　金：国家国际科技合作计划资助(No.2010DFA64600)

摘　　要：目前很大一部分风电场都处于复杂地形中,处于山后的背风区域具有大分离的流动特征。为把DES方法应用到复杂地形模拟中去,采用带有壁面函数的DES方法对具有几乎垂直的悬崖地貌特征的Bolund岛进行了数值模拟。计算中采用了不同密度的网格。计算采用中心差分格式。在山后的大分离区,当网格大小为山高的5%时,可以获得很好的计算结果。在模拟大分离流动时,DES较RANS模拟方法具有显著的优势。Nowadays,a large part of wind farms are located in complex terrains.The flow behind hills has large separation characteristics.In order to use detached eddy simulation in the simulation of flow over complex terrain,Bolund Island with an almost vertical upstream escarpment was simulated using DES with wall function.Computational domains with different density grids were utilized.Flow structure details and good results can be obtained when the grid size is a 5% smaller than the height of the island in large separation region,when using central scheme.DES has better performance than RANS in large separation region.

关 键 词：数值模拟 DES 微观选址 Bolund 

分 类 号：TM614[电气工程—电力系统及自动化]