Numerical investigation on the twisted wind-induced aeroelastic response of a square supertall building

IF 3.4 2区工程技术 Q1 ENGINEERING, MECHANICAL

Journal of Fluids and Structures Pub Date : 2025-06-02 DOI:10.1016/j.jfluidstructs.2025.104350

Bowen YAN , Qiaowen Ran , Yangjin Yuan , Hongyu Ren , Xiao Li , Xuhong Zhou , Qingshan Yang , Qingkuan Liu

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引用次数: 0

Abstract

The aerodynamic and aeroelastic characteristics of a square supertall building and the surrounding wind field are numerically analyzed, accounting for the influence of the twisted wind field (TWF). A two-way coupled fluid-structure-interaction (FSI) simulation, validated by the aeroelastic experiments conducted in both TWF and conventional wind field (CWF), is employed to fulfill this purpose. This study focuses on the effect of TWF on the vortex-induced vibration (VIV) response of the building and associated aerodynamic forces acting on the aeroelastic model. The results indicate that the fluctuating forces on the tall building are reduced significantly when it is immersed in TWF compared to those in CWF. In TWF, the spectral energy of the across-wind force is dispersed over a wider frequency range than that in the CWF. Furthermore, the aeroelastic response of the building in the TWF is restricted at the upper range of the reduced wind velocity, attributed to the disordered and twisted wake flow near the building. The findings from the present study can enhance the understanding of the VIV behavior of super-tall buildings under the effect of twisted winds.

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方形超高层建筑扭曲风致气动弹性响应的数值研究

考虑扭曲风场的影响，对方形超高层建筑及其周围风场的气动和气动弹性特性进行了数值分析。采用双向耦合流固耦合（FSI）模拟，并在两种风场（TWF）和常规风场（CWF）中进行气动弹性实验验证。本文主要研究了TWF对建筑物涡激振动（VIV）响应的影响以及作用于气动弹性模型的相关气动力。结果表明：高层建筑在TWF中受到的脉动力比在CWF中受到的脉动力明显减小；在TWF中，横向风的频谱能量分布在比CWF更宽的频率范围内。此外，由于建筑物附近的无序和扭曲尾流，建筑物在TWF内的气动弹性响应被限制在减小风速的上限。本文的研究结果可以提高对超高层建筑在扭曲风作用下的动频特性的认识。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Fluids and Structures 工程技术-工程：机械

CiteScore

6.90

自引率

8.30%

发文量

173

审稿时长

65 days

期刊介绍： The Journal of Fluids and Structures serves as a focal point and a forum for the exchange of ideas, for the many kinds of specialists and practitioners concerned with fluid–structure interactions and the dynamics of systems related thereto, in any field. One of its aims is to foster the cross–fertilization of ideas, methods and techniques in the various disciplines involved. The journal publishes papers that present original and significant contributions on all aspects of the mechanical interactions between fluids and solids, regardless of scale.