(湖南省建筑设计院集团股份有限公司, 长沙 410012)

摘要: 为研究超高层建筑气动噪声的分布特征,以晟通梅溪湖国际总部中心二期项目为例,结合标准 k-ε 湍流模型和声类比法开展了超高层建筑气动噪声的数值模拟。 基于 Fluent 软件平台,通过自主开发的用户自定义函数(UDF)程序生成满足大气边界层特性的入口湍流风场,并将其赋值给计算域入口边界,开展流场数值模拟获取声源信息,再基于 FW-H 方程求解声场。 研究表明,气动噪声与流场的脉动特性密切相关,结构侧面的总声压级最大,迎风侧次之,背风侧最小。 气流流经结构折角位置时与结构间的相互作用是风致气动噪声的重要来源。 在建筑设计阶段需要重视气动噪声并采取相应措施降低气动噪声的不利影响。 相关研究结果可为超高层建筑风致气动噪声的 CFD 模拟提供重要参考。

关键词: 超高层建筑; 非对称双塔连体结构; 气动噪声; CFD 数值模拟; 声类比法

中图分类号:TU973 文献标志码:A 文章编号:1002-848X(2022)22-0089-06

DOI:10. 19701 / j. jzjg. ZJ220079

Investigation on aerodynamic noise around close-distance asymmetry twin-tower connected structure by CFD numerical simulation

YUAN Tao, YANG Xiao, XIA Xinhong, WANG Siqing, LI Peng

(Hunan Architectural Design Institute Group Co. , Ltd. , Changsha 410012, China)

Abstract: In order to study the distribution characteristics of aerodynamic noise of super high-rise buildings, aimed at thesecond phase project of SNTO Meixi Lake International Headquarters Center, a numerical simulation of aerodynamic noiseof super high-rise buildings was carried out by combining standard k-ε turbulence model and acoustic analogy method.Based on the Fluent software platform, the inlet turbulent wind field that satisfies the characteristics of the atmosphericboundary layer was generated through the self-developed User Defined Functions (UDF) program, and it was assigned tothe inlet boundary of the computational domain, and the numerical simulation of the flow field was carried out to obtain thesound source information. The sound field was solved based on the FW-H equation. The research shows that theaerodynamic noise is closely related to the pulsation characteristics of the flow field. The total sound pressure level on theside of the structure is the largest, followed by the windward side and the smallest on the leeward side. The interactionbetween the airflow and the structure when it flows through the corners of the structure is an important source ofwind-induced aerodynamic noise. In the design stage of the building, attention should be paid to aerodynamic noise andcorresponding measures should be taken to reduce the adverse effects of aerodynamic noise. The present study can providesignificant reference to study wind-induced aerodynamic noise around super high-rise buildings by CFD numericalsimulation.

Keywords: super high-rise building; asymmetry twin-tower connected structure; aerodynamic noise; CFD numericalsimulation; acoustic analogy method

∗国家自然科学基金(52278509)。

第一作者:袁涛,博士,高级工程师,主要从事大型复杂结构设计研究,Email:yuant@ hnbim. com。

[引用本文] 袁涛,杨晓,夏心红,等. 近距离非对称双塔连体结构气动噪声 CFD 数值模拟研究[ J]. 建筑结构,2022,52 ( 22):89-94. YUAN Tao,YANG Xiao,XIA Xinhong,et al. Investigation on aerodynamic noise around closedistance asymmetry twin-tower connected structure by CFD numerical simulation[J]. Building Structure,2022,52(22):89-94.