方形土楼风环境的数值模拟及评价  

Numerical simulation and evaluation of wind environment about square earth buildings

作　　者：花长城[1] 彭兴黔[1] 朱海[1] 

机构地区：[1]华侨大学土木工程学院,福建泉州362021

出　　处：《郑州轻工业学院学报（自然科学版）》2010年第5期90-94,共5页Journal of Zhengzhou University of Light Industry:Natural Science

基　　金：国家自然科学基金项目(50708040);福建省自然科学基金项目(2009J01255);厦门市科技计划高校创新项目(3502Z20083039)

摘　　要：为了较准确地预测土楼的风环境,运用计算流体动力学的软件CFX,并采用SSTk-ω湍流物理模型,对土楼在不同风向角下的风环境进行数值模拟.结果表明:行人高度处的风速在墙角处集中,形成类似于马蹄的强风区域,风速增加近70%,且风速在土楼背风面形成竖直柱状旋涡,其尾流区也有旋涡产生.同时得到土楼院内行人高度处的风速比在各风向角下的具体值,为土楼风环境的评价提供了可靠的依据.Based on computational fluid dynamics（CFD）software CFX and the SST k-ω turbulence physics model,the wind environment of earth buildings under different wind incidence direction was simulated.In order to more accurately predict earth buildings wind environment.The results indicated that the wind speed of pedestrian height concentrated in the corner formed an area of strong wind similar to the horseshoe,the wind speed increased by nearly 70%,and the wind speed at the leeward side of the earth buildings formed vertical columnar vortex,which also generated in the wake zone.At the same time,the specific values of wind speed of pedestrian height in all wind incidence direction were gotten.A viable basis evaluation of wind environment of earth buildings is provided by numerical simulation around the wind speed and flow.

关 键 词：方形土楼 数值模拟 风环境 

分 类 号：TU-023[建筑科学—建筑理论] TU312.1