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(湖南省建筑設(shè)計(jì)院集團(tuán)股份有限公司, 長沙 410012)
摘要: 為研究超高層建筑氣動(dòng)噪聲的分布特征,以晟通梅溪湖國際總部中心二期項(xiàng)目為例,結(jié)合標(biāo)準(zhǔn) k-ε 湍流模型和聲類比法開展了超高層建筑氣動(dòng)噪聲的數(shù)值模擬。 基于 Fluent 軟件平臺,通過自主開發(fā)的用戶自定義函數(shù)(UDF)程序生成滿足大氣邊界層特性的入口湍流風(fēng)場,并將其賦值給計(jì)算域入口邊界,開展流場數(shù)值模擬獲取聲源信息,再基于 FW-H 方程求解聲場。 研究表明,氣動(dòng)噪聲與流場的脈動(dòng)特性密切相關(guān),結(jié)構(gòu)側(cè)面的總聲壓級最大,迎風(fēng)側(cè)次之,背風(fēng)側(cè)最小。 氣流流經(jīng)結(jié)構(gòu)折角位置時(shí)與結(jié)構(gòu)間的相互作用是風(fēng)致氣動(dòng)噪聲的重要來源。 在建筑設(shè)計(jì)階段需要重視氣動(dòng)噪聲并采取相應(yīng)措施降低氣動(dòng)噪聲的不利影響。 相關(guān)研究結(jié)果可為超高層建筑風(fēng)致氣動(dòng)噪聲的 CFD 模擬提供重要參考。
關(guān)鍵詞: 超高層建筑; 非對稱雙塔連體結(jié)構(gòu); 氣動(dòng)噪聲; CFD 數(shù)值模擬; 聲類比法
中圖分類號:TU973 文獻(xiàn)標(biāo)志碼:A 文章編號: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
∗國家自然科學(xué)基金(52278509)。
第一作者:袁濤,博士,高級工程師,主要從事大型復(fù)雜結(jié)構(gòu)設(shè)計(jì)研究,Email:yuant@ hnbim. com。
[引用本文] 袁濤,楊曉,夏心紅,等. 近距離非對稱雙塔連體結(jié)構(gòu)氣動(dòng)噪聲 CFD 數(shù)值模擬研究[ J]. 建筑結(jié)構(gòu),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.
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