建筑数值风洞的基础研究

Basic Study of Architectural Numerical Wind Tunnel

假设计算区域的上空面和二侧面为自由边界，地面和建筑物的各面为壁函数的边界，计算网格为３６×３０×２７．构造１０ｍ×１０ｍ×１０ｍ建筑数值风洞”，采用ｋ－ε湍流模型，对该数值风洞进行了风绕流数值计算．得到了建筑表面压力分布及建筑周围速度矢量图．与实验结果比较表明，该数值风洞是可行的．

Using k-εturbulene model ,we constitute a architectrual numerical windtunnel,which is 38 × 30 × 27 mesh division,has free boundary for up,left and rightside, wall function for ground side and the others of tested building as boundary condition. For this wind tunnek,the numcrical calculation of flow field around a 10m× 10m×10m building is presented.Th resuts include the pressure distribution on the building surface and the velocity vector chart around the building.The architectural numerical wind tunnek proved feasible by comparing calculating with experimental results.