CFD软件在结构抗风分析中的应用

CFD Software and Its Application in Structure Preventing Wind

介绍了计算流体动力学(CFD)方法的主要功能以及几种大型通用CFD商业软件的发展概况和主要性能。运用计算流体动力学中的非稳态计算,获取建筑物表面风荷载时程,将其直接作用于结构进行动力时程分析,统计结构动力响应从而获得结构的风振系数。给出了CFD软件在建筑设计、结构抗风和流固耦合方面的应用实例。

The main functions of computational fluid dynamics, as well as the general simulation and main performance of some great universal CFD softwares are introduced. Unsteady calculation of CFD was used to obtain the wind load time histo- ry on structures. Then, the wind load was directly applied on the finite element model. The practical examples in the design of architecture, wind resistance of structures and fluid- structure interaction computed by CFD are presented to compute the dynamic responses in time domain for the dynamic magnification factor.