非等高建筑物群内风力机的微观选址  

Micrositing of Rooftop Wind Turbine in the Unequal Height Building Group

作　　者：邸建琛 侯亚丽[1] 吕爱静 王文新 汪建文[1,2] DI Jian-Chen;HOU Ya-Li;LV Ai-Jing;WANG Wen-Xin;WANG Jian-Wen(College of Energy and Power Engineering,Inner Mongolia University,Hohliot 010051.China;Inner Mongolia Autonomous Region Key Laboratory of Wind and Solar Energy Utilization Mechanism and Optimization,Hohhot 010051,China;College of Civil Engineering,Inner Alongolia University,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学能源与动力工程学院,呼和浩特010051 [2]内蒙古自治区风能太阳能利用机理及优化重点实验室,呼和浩特010051 [3]内蒙古工业大学土木工程学院,呼和浩特010051

出　　处：《工程热物理学报》2020年第4期898-906,共9页Journal of Engineering Thermophysics

基　　金：内蒙古自然基金重大项目(No.2016ZD04);内蒙古自治区自然科学基金(No.2017MS0527,No.2015MS0540)。

摘　　要：以符合城市大气边界层特征的风速剖面为入流边界,采用CFD方法,对生活中常见的3种非等高建筑物群顶面风流场湍流特征进行了模拟计算,分析了非等高建筑物群顶面风力机的具体安装位置和高度,结果表明:受最高建筑物尾流效应影响,非等高建筑物群内低矮建筑物顶面TI>18%的区域一直持续到最高建筑物顶面以上,不适合安装风力机;风力机安装于最高建筑物顶面的前边缘和近前缘区域,可有效提高风力机的输出功率;最高建筑物顶面前拐角位置风力机安装高度最低,高于(1.13~1.24)H3即可(H3为最高建筑物高度);当安装高度达到1.4H3后,可将风力机安装于最高建筑物顶面的任何位置。To determine the suitable mounting location and height of the roof-mounted wind turbine,the turbulence characteristics over three common non-equal buildings were simulated via the computational fluid dynamic(CFD)method.Foremost,the wind profile consistent with the urban atmospheric boundary layer is applied in the inflow condition.The results suggest that the wind turbine is not suitable for installation over the low-rise buildings with a height lower than the top of the highest building in the non-equal buildings,where the turbulence intensity is higher than 18%caused by the wake effect of the highest building.The wind turbine operates efficiently if it mounts close to the front edge on the top of the highest building,and the lowest installation height range from 1.13 to 1.24 times of H3 at the corner of the rooftop(H3 is the highest building).In addition,the wind turbine can be installed on an arbitrary position at the rooftop of the highest building when the installation height is larger than 1.4 H3.

关 键 词：非等高建筑物群 风力机 湍流强度 微观选址 

分 类 号：TK513[动力工程及工程热物理—热能工程]