摘要
基于Reynolds时均N-S方程和标准k-ε双方程封闭模型,对一类带挑檐的低层双坡屋面房屋在不同风向角下的表面风压进行了数值模拟,模拟结果与风洞试验结果作了比较。在此基础上,根据模拟结果对房屋各表面及挑檐处的风压分布特性和规律进行了分析和计算,获得了不同风向角下各表面的风载体型系数,为该类房屋的工程抗风设计提供了依据。
Based on the Reynolds-averaged Navier-Stokes equations and the standard k-Ε turbulence model, the wind-induced pressure on a low-rise building with eaves and gable roof were predicted by numerical simulation. The computed results were compared with the wind tunnel test data. The distribution characteristics of the surface wind pressure on the walls and eaves were analyzed on the basis of numerical results. The shape factors of wind load on the surface in different wind directions were obtained, which provide parameters for the wind-resistance design of this type of buildings.
出处
《计算力学学报》
EI
CAS
CSCD
北大核心
2004年第3期272-276,共5页
Chinese Journal of Computational Mechanics
基金
国家自然科学基金(59908010)资助项目.
关键词
低层建筑
表面风压
敷值模拟
风载体型系敷
Computer simulation
Navier Stokes equations
Pressure distribution
Reynolds number
Turbulence
Wind
