低层标模典型点处风压分布的CFD数值模拟研究  

CFD numerical simulation of points pressure on TTU test building

作　　者：赵豆豆[1] 杨丽[1,2] 李亚楠[1] 

机构地区：[1]上海理工大学环境与建筑学院,上海200092 [2]同济大学建筑与城市规划学院高密度人居环境生态与节能教育部重点实验室,上海200092

出　　处：《山西建筑》2013年第25期25-28,共4页Shanxi Architecture

基　　金："十二五"国家科技支撑计划"城镇群高密度空间效能优化关键技术研究"(课题编号:2012BAJ15B03)

摘　　要：为研究低层建筑屋面风压分布,采用RNG K-ε湍流模型对TTU进行数值分析,通过将计算结果与实测模型及风洞实验数据进行对比,结果表明,斜向来流风会导致迎风面及屋面前缘区域来流分离现象严重,从而出现极大的负压,且分布不均匀,同时还说明CFD数值模拟可以较准确地预测来流风特性及实际结构的平均风荷载分布,以满足实际工程设计中应用的需要。In order to study the wind pressure distribution of the low-rise building,the RNG K-ε model was adopted as the turbulent model of TTU.The results were compared with the wind tunnel test and field measurements.Results show that diagonal wind would lead a serious seperation phenomenan,thus a negative pressure zone occurs in the location of windward side.In general,the results obtained from simulation match well with the wind tunnel test as well as field measurements,and CFD numerical simulation can accurately predict the wind flow and average wind load,which can be applied in designing of real projects.

关 键 词：风压数值模拟 RNGK-ε模型 风洞试验 

分 类 号：TU312.1[建筑科学—结构工程]