This paper explores a recent application of the computational fluid dynamics technique “CFD” for wind analysis and its comparisons with the conventional wind tunnel experimentations. This study is centered on the wind response of square and corner cut-shaped building models and its optimization caused by the variation of the wind incidence angle. Extensive rigid model experiments of two building models of length scale 1:100 have been performed in the boundary layer wind tunnel. The numerical analysis has been carried out with the standard k-ε turbulence model to evaluate the force coefficients, base moments, power spectra, external surface pressure coefficients, and flow field characteristics of the models with variable wind angles of incidence. The comparisons between experimental results and CFD analysis suggest the computational approach's viability in wind analysis of tall structures efficiently and accurately. A case study of aerodynamic mitigation by corner cut suggests minor modification techniques performance, efficiency, and limitations.

本文探讨了计算流体动力学技术“CFD”在风分析中的最新应用及其与传统风洞实验的比较。本研究主要围绕方形和角切形建筑模型的风响应及其因风入射角变化引起的优化。已经在边界层风洞中对两个长度比例为 1:100 的建筑模型进行了广泛的刚性模型实验。采用标准k-ε湍流模型进行数值分析，对变风入射角模型的力系数、基矩、功率谱、外表面压力系数和流场特性进行评价。实验结果与 CFD 分析之间的比较表明了计算方法' 高效准确地进行高层结构风分析的可行性。通过切角进行空气动力学缓解的案例研究表明了微小的修改技术性能、效率和局限性。