基于CFD保亿中心风荷载三维稳态数值分析

Three-dimensional Steady Numerical Analysis of Wind Effects on Boee Center by CFD

采用Realizable k—ε湍流模型,对处于B类地貌的保亿中心的两栋体型复杂具狭缝效应的A、B高层建筑方案,进行风荷载的CFD数值分析.通过网格划分,边界条件、非平衡的壁面函数法近壁面处理,利用fluent软件提取建筑物表面各测点的风压以及其周围的流场分布,进而得出大楼截面的风荷载合力,给出B座大楼沿X,Y轴方向的层体型系数,供主体承重结构设计参考,确保保亿中心结构抗风设计的安全、经济、合理.

By means of Realizable K -εturbulence model , the wind load of two buildings （ A and B） in Boee Center was analyzed by CFD .The two buildings were situated in the B class of terrain roughness wind field and complex in structure .Based on the mesh , boundary conditions , Non-equilibrium Wall Functions method for near -the-wall treatment , the wind pressure of measured points on the building surface and the flow field distribution around the center were got using FLUENT software .The force of wind load on building section was calculated and the layer shape coefficient of the B building along X, Y axis directions was obtained , serving as the reference to the main load-bearing structural wind -resistance design so as to ensure the safety , economy and reasonability of structural design .