Computational evaluation of wind loads on buildings: a review
Computational evaluation of wind loads on buildings: a review
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DOI：
10.12989/was.2013.16.6.629
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发表时间：
2013-06
影响因子：
1.6
通讯作者：
Agerneh K. Dagnew;G. Bitsuamlak
中科院分区：
文献类型：
--
作者：
Agerneh K. Dagnew;G. Bitsuamlak
本文综述了建筑物风荷载数值计算的研究现状。数值模拟的重要方面，包括（i）湍流模拟，（ii）流入边界条件，（iii）地面粗糙度，（iv）近壁处理，（vi）量化风荷载的计算流体动力学（CFD）技术进行了总结。基于风荷载评估的物理现实性和易于应用性，讨论了大涡模拟（LES）相对于雷诺平均Navier-Stokes（RANS）和混合RANS-LES的相对优势。整体LES模拟似乎适合风荷载评估。需要计算风荷载验证与实验或现场数据相比，强调。建筑物的数值和实验风荷载评估之间的比较研究表明，一般良好的协议的平均值，但更多的工作是必要的，准确的峰值设计风荷载评估。特别是需要更多的研究瞬态入口边界和近壁建模相关的问题。
This paper reviews the current state-of-the-art in the numerical evaluation of wind loads on buildings. Important aspects of numerical modeling including (i) turbulence modeling, (ii) inflow boundary conditions, (iii) ground surface roughness, (iv) near wall treatments, and (vi) quantification of wind loads using the techniques of computational fluid dynamics (CFD) are summarized. Relative advantages of Large Eddy Simulation (LES) over Reynolds Averaged Navier-Stokes (RANS) and hybrid RANS-LES over LES are discussed based on physical realism and ease of application for wind load evaluation. Overall LES based simulations seem suitable for wind load evaluation. A need for computational wind load validations in comparison with experimental or field data is emphasized. A comparative study among numerical and experimental wind load evaluation on buildings demonstrated generally good agreements on the mean values, but more work is imperative for accurate peak design wind load evaluations. Particularly more research is needed on transient inlet boundaries and near wall modeling related issues.