Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (4): 121-127.doi: 10.3969/j.issn.1000-565X.2011.04.022

• Electronics, Communication & Automation Technology • Previous Articles     Next Articles

Comparison of Turbulence Models for Numerical Simulation of Outdoor Wind Environment Around Building

Li Qiong1  Akashi Mochida2  Meng Qing-lin1  Zhao Li-hua1   

  1. 1.State Key Laboratory of Subtropical Building Science,South China University of Technology,Guangzhou 510640,Guangdong,China;2.Department of Architecture and Building Science,Tohoku University,Sendai 980-8579,Miyagi,Japan
  • Received:2010-09-27 Revised:2010-12-27 Online:2011-04-25 Published:2011-03-01
  • Contact: 李琼(1980-)，女，博士，讲师，主要从事建筑环境与节能研究 E-mail:arliqiong@scut.edu.cn
  • About author:李琼(1980-)，女，博士，讲师，主要从事建筑环境与节能研究
  • Supported by:

    国家自然科学青年基金资助项目(51008127)；重大国际(地区)合作研究项目(50720165805)；广东省自然科学基金博士启动项目(10451064101005823)；广东省自然科学基金重点项目(8251064101000006)；高等学校博士学科点专项科研基金资助项目(20100172120006)；华南理工大学中央高校基本科研业务费专项资金资助项(2009ZM0088，2009ZZ0067)；华南理工大学自然科学基金资助项目(x2jzE5090660)

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Abstract:

Aiming at the wind-tunnel experimental models with and without gas dispersion provided by the Architectural Institute of Japan（AIJ）,15 turbulence models are employed to simulate the outdoor wind environment.Then,by the comparison between the simulated results and the wind-tunnel experimental ones,the optimal turbulence model for the numerical simulation of outdoor wind environment around a building is determined.The results show that Suga's cubic high-Re k-ε model is the best due to its high accuracy of simulating both the air flow and the pollutant diffusion,but the CPU time of it is longer than that of the standard k-ε model.Thus,during the CFD numerical simulation of the outdoor wind environment of a building,Suga's cubic high-Re k-ε model can be used when the time is enough,and the standard k-ε model can be used when high accuracy is not required and when the calculation time is limited.

Key words: numerical simulation, building, wind environment, turbulence model