应用格子波尔兹曼模型模拟建筑物周围流场

Simulation of fluid field of building with lattice boltzmann model

采用格子波尔兹曼方法 ,应用三维格子波尔兹曼模型对不同雷诺数和不同宽高比的建筑物周围流场进行了模拟计算 ,结果证明随着雷诺数的增加出现了回流区 ,且雷诺数和宽高比越大 ,回流区的面积越大 .由此可见 。

The authors used lattice Boltzmann method to simulate the flow around the building. The flow around the building characterized by different Re number and different width height ratio were computed by using 3 D lattice Boltzmann model. It was proved that circumfluence would appear along with the increase of Re number. The bigger the Re number and width height ratio were, the wider the area of the circumfluence was. As a result, it was feasible to use lattice Boltzmann method to simulate the flow around buildings.