NUMERICAL SIMULATION OF 3D STEADY ATMOSPHERIC FLOW AROUND HIGH-RISE BUILDINGS
Based on different Reynolds Averaged Navier-Stokes Equations (RANS) turbulence models, such as standard k-ε model etc., a commercial computational fluid dynamics software Fluent 6.3 was employed to numerically simulate the 3D steady wind flow field around standard high building CAARC in atmospheric boundary layer. The simulating results are compared with the data obtained from the wind tunnel experiment, which shows that numerical simulation is a feasible way to study the wind flow around high building and the distributing of wind pressure in the buildings surface. Standard k-ε、 Realizable k-ε、 RNG k-ε、 and SST k-ω models can give useful information and results from the aspect of engineering application. On the wall of windward, the numerical results are very close to those of the tests; and, on the walls of side wind and leeward, the numerical results lie between the results of NPL and TJ-2. Positive mean wind pressures appear on the windward surface, and the high mean pressures occur in the area upon the middle of windward surface and decrease on both sides and below. The pressures on the leeward surface and two side-wind surfaces are still negative. There is a minor difference among the results of these RANS turbulence models. The research provides a foundation for numerical simulation study of wind flow around bluff body.
computational wind engineering high-rise building turbulence model numerical simulation
Shao-Feng Nie Xu-Hong Zhou Tian-Hua Zhou Xin Gong
School of Civil Engineering, Changan University, Xian 710064, P.R. China School of Civil Engineering, Changan University, Xian 710064, P.R. China School of Civil Engineeri
国际会议
广州
英文
1532-1537
2009-11-28（万方平台首次上网日期，不代表论文的发表时间）