近距离非对称双塔连体结构气动噪声CFD数值模拟研究
引用文献：
袁涛 杨晓 夏心红 王四清 李鹏. 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，2022，48（22）：89-94.
YUAN Tao YANG Xiao XIA Xinhong WANG Siqing LI Peng. Investigation on aerodynamic noise around close-distance asymmetry twin-tower connected structure by CFD numerical simulation[J]. Building Structure，2022,48（22）：89-94.
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；
基金：国家自然科学基金(52278509)。
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[15] 声环境质量标准：GB 3096—2008[S].北京：中国环境科学出版社，2008.
[2] FUJITA H.The characteristics of the Aeolian tone radiated from two-dimensional cylinders [J].Fluid Dynamics Rersearch,2010,42:015002.
[3] ALOMAR A,ANGLAND D,ZHANG X,et al.Experimental study of noise emitted by circular cylinders with large roughness [J].Journal of Sound and Vibration,2014,333(24):6475-6497.
[4] 王松岭，李曙光，刘梅，等.带脊状的NACA0018翼型气动噪声特性[J].科学技术与工程，2019,19(7):166-171.
[5] 龙双丽，聂宏，许鑫.不同雷诺数下圆柱绕流气动噪声数值模拟[J].声学技术，2011,30(2):111-116.
[6] YANG D,LI J,LIU J,et al.Analysis on physical mechanism of sound generation inside cavities based on acoustic analogy method [J].Open Journal of Fluid Dynamics,2013,3:23-31.
[7] 王丹，白俊强，黄海涛，等.基于转捩/尺度适应模型与FW-H声学方程的气动噪声数值模拟研究[J].计算力学学报，2013,30(5):704-711.
[8] 沈国辉，张扬，姜浩，等.基于大涡模拟和FW-H方程的二维圆柱风噪声模拟[J].湖南大学学报(自然科学版),2017,44(9):33-40.
[9] 顾梦凡，宋保维.基于大涡模拟的方柱绕流噪声特性研究[J].西北工业大学学报，2020,38(3):465-470.
[10] 马瑞轩，李文建，左孔成.基于SST-SAS方法与FW-H方程的串列双圆柱数值模拟研究[J].应用力学学报，2020,37(3):1057-1064.
[11] WILLIAMS J E F,HAWKINGS D L.Sound generation by turbulence and surfaces in arbitrary motion[J].Philosophical Transactions of the Royal Society of London:Series A,Mathematical and Physical Sciences,1969,264(1151):321-342.
[12] TOMINAGA T,MOCHIDA A,YOSHIE R,et al.AIJ guidelines for practical applications of CFD to pedestrian wind environment around buildings [J].Journal of Wind Engineering and Industrial Aerodynamics,2008,96(10-11):1749-1761.
[13] 建筑结构荷载规范：GB 50009—2012[S].北京：中国建筑工业出版社，2012.
[14] 祝志文，邓燕华.超高层建筑气动噪声场的大涡模拟[J].西南交通大学学报，2019,54(4):748-756.
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Investigation on aerodynamic noise around close-distance asymmetry twin-tower connected structure by CFD numerical simulation
Abstract: 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-ε turbulence 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.
Keywords: super high-rise building; asymmetry twin-tower connected structure; aerodynamic noise; CFD numerical simulation; acoustic analogy method
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