摘要
目前建筑结构抗风研究方法主要有现场实测、风洞试验以及CFD数值模拟,虽然前两种方法得出的数据可靠、实用,但是试验周期长、代价昂贵等等这些因素一定程度上约束了它们在实际工程中的应用。CFD是近年来发展起来的一门新兴学科,已经被证实能有效的应用在建筑工程的风荷载模拟方面。文章较详细的介绍了CFD的原理,包括连续方程、运动方程以及N～S方程,并介绍了CFD软件FLUENT的计算流程。最后利用FLUENT软件以威斯汀中心为实例进行数值模拟,给出了表面风压系数、局部体型系数以及整体体型系数,并列出了最不利工况下体型系数。
At present,methods of researches in structural wind engineering include field measurement、windtunnel experiment and CFD numerical simulations.Though results of two former methods are applicable and reliable,long-time and high-costs of tests restricte its appilication in practical engineering.CFD is a kind of subject which was demonstrated its application in wind load simulations in engineering.The principle of CFD is introduced in detail in this paper,including Continuous-equation,Momentum-equation,N～S equa...
出处
《江苏建筑》
2009年第6期34-37,共4页
Jiangsu Construction
关键词
CFD
N^S方程
风压系数
体型系数
抗风设计
CFD
N～S equation
wind pressure coefficient
shape coefficient
wind-resistant design
