应用CFD技术预测国家大剧院表面风压  

Numerical Simulation of Wind Pressure Distribution on the Chinese National Grand Theatre

作　　者：杨波[1] 吕令毅[1] 

机构地区：[1]东南大学混凝土及预应力混凝土结构教育部重点实验室,南京210096

出　　处：《建筑科学》2005年第4期38-41,27,共5页Building Science

基　　金：国家自然科学基金资助项目(50478074);教育部优秀青年教师基金资助项目

摘　　要：基于定常Reynolds平均Navier-Stokes方程,采用RNG湍流模型,对中国国家大剧院穹顶在不同风向下的表面风压及周围风场进行了数值模拟。给出了0°风向角下建筑周围的流动图像和穹顶表面的压力系数分布,并分析了其基本特征。预测了不同风向下的顶部最大负压,并与风洞试验数据作了对比。计算了各个风向下的六个气动力分量,指出了它们随风向角的变化规律。The numerical simulation is carried out to predict the wind-induced pressures on the Chinese National Grand Theatre and the wind flow field around it in many whad directions. The simulation is based on steady Reynokls averaged Navier-Stokes equations with RNG turbulence model. Contours of the pressure coefficient on the surface of the dome and the flow images around it ha the 0°direction are presented, and their main characteristic are analyzed. The maxhnum negative pressure on the top of the dome in the different directions is predicted, and they are compared with the data from the wind tunnel test. The six aerodynamics components are calculated, and their changes with the wind directions are discussed.

关 键 词：建筑风压 计算流体动力学 穹顶 流动显示 

分 类 号：TU312.1[建筑科学—结构工程] TU330.1