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。
In order to study the distribution characteristics of aerodynamic noise of super high-rise buildings,aimed at the second phase project of SNTO Meixi Lake International Headquarters Center,a numerical simulation of aerodynamic noise of super high-rise buildings was carried out by combining standard k-εturbulence model and acoustic analogy method.Based on the Fluent software platform,the inlet turbulent wind field that satisfies the characteristics of the atmospheric boundary layer was generated through the self-developed User Defined Functions(UDF)program,and it was assigned to the inlet boundary of the computational domain,and the numerical simulation of the flow field was carried out to obtain the sound source information.The sound field was solved based on the FW-H equation.The research shows that the aerodynamic noise is closely related to the pulsation characteristics of the flow field.The total sound pressure level on the side of the structure is the largest,followed by the windward side and the smallest on the leeward side.The interaction between the airflow and the structure when it flows through the corners of the structure is an important source of wind-induced aerodynamic noise.In the design stage of the building,attention should be paid to aerodynamic noise and corresponding measures should be taken to reduce the adverse effects of aerodynamic noise.The present study can provide significant reference to study wind-induced aerodynamic noise around super high-rise buildings by CFD numerical simulation.
作者
袁涛
杨晓
夏心红
王四清
李鹏
YUAN Tao;YANG Xiao;XIA Xinhong;WANG Siqing;LI Peng(Hunan Architectural Design Institute Group Co.,Ltd.,Changsha 410012,China)
出处
《建筑结构》
CSCD
北大核心
2022年第22期89-94,共6页
Building Structure
基金
国家自然科学基金(52278509)。
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
super high-rise building
asymmetry twin-tower connected structure
aerodynamic noise
CFD numerical simulation
acoustic analogy method
作者简介
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。
