中文摘要：

把流线迎风Petrov—Galerkin（SUPG）稳定化方法和三步方法与动态亚格子模型相结合，建立了一种基于任意拉格朗日一欧拉描述、可用于结构周围风场特性和风压分布分析的动态亚格子大涡模拟方法，基于该方法并运用分区交替求解算法分析流固耦合相互作用问题。对流场的空间离散，采用速度和压力的同阶插值函数；对流场的时间离散，运用具有二阶精度的三步格式稳定化有限元方法。利用Newmark逐步积分方法计算结构域，运用弹簧近似法进行网格域网格更新。对结构风效应和结构周围三维风场绕流及其特性进行了数值模拟，归纳总结了结构风效应和三维风场绕流的一些规律。结果表明：就网壳算例而言，考虑流固耦合模型效应后可以得到更高的风压系数。

英文摘要：

Large eddy simulation （LES） combined with fluid finite element method （FEM） was developed by introducing the dynamic sub-grid scale model and the streamline upwind Petrov- Galerkin （SUPG） stabilized method to predict wind flow feature, wind pressure and wind-induced effect of typical building structures based on Arditrary Lagrange-Euler method. The partitioned solution strategy was adopted to calculate fluid-structure interaction. Through fluid field analysis, the same order interpolation was employed for spatial discretization of both fluid velocity and pressure, and the temporal discretization was carried out by stabilized three-step technique with the second order accuracy. Newmark integral approach based on finite element formulation was introduced for structural computation, and spring analogy method was introduced for the grid update. Finally, the wind-induced structural effect and three-dimensional wind flow past buildings with typical shapes were simulated and analyzed, and some laws were concluded. The results show that the higher wind pressure coefficient can be obtained by considering fluid-structure interaction for the case of reticulated shell.