The main results of the wind tunnel experiment on the 1 200 model of the chinese national grand theatre were introduced . at first , the wind pressure distributions of its semi - ellipsoidal surface in an atmospheric boundary layer flow were simulated , and the effect of the surface roughness was researched . the results indicated a reasonable regularity of its wind loading in various wind directions . on the problem of the environmental influence , it demonstrated that there existed a great effect for the pressure distribution of the great theatre when the grand hall is at east 介绍中国国家大剧院模型表面风荷载的风洞实验结果。首先对它的半椭球表面在大气边界层中的风压分布及增加表面粗糙度的影响进行研究，实验结果表明在不同风向下它的风荷载具有很好的规律性。有环境影响的对比实验结果表明人民大会堂对大剧院的风荷载有较大的影响。
Usually long span roofs can be categorized as closed and open type regarding whether their inner surface suffers from wind directly or not . according to these different types , different ways of wind runnel test are given to obtain the wind pressures on long span roofs . and the characteristic of wind pressure distribution on each type of long span roofs is discussed with regard to the roof shapes 首先，对于大跨度屋盖结构的表面风压，本文提供了一套具体的分析思路，分四周封闭体型和整体敞开体型对大跨度屋盖结构进行风洞试验方法和风压分布规律的分析，并讨论了大跨度屋盖结构的干扰效应和抑风措施。
Using the program two and three - dimensional numerical simulation of wind flow around single or multiple buildings can be achieved and the detailed flow condition including wind velocities , pressures and time - average characteristics of turbulence can be obtained . in order to attain the required accuracy efficiently multi - layer local refinements can be carried out based on the initial division grid 程序采用fortran语言编制，可实现二维和三维单体及群体建筑的绕流风场的模拟计算，获得建筑绕流风速、表面风压及湍流平均特性等数据；可通过对初始网格实施多层次的网格局部加密，以使风场解达到最终的精度要求。
