Numerical Simulation of 3D Atmospheric Flow Around a Bluff Body of CAARC Standard High Rise Building Model
NIE Shao feng,ZHOU Xu hong,ZHOU Tian hua and SHI Yu
DOI:10.11835/j.issn.1674-4764.2009.06.008
Received May 18, 2009,Revised , Accepted , Available online July 01, 2015
Volume ,2009,Pages 40-46
- Abstract
Based on Reynolds Averaged Navier Stokes Equations(RANS)standard k ε model, realizable k ε model, RNG k ε model and SST k ε model, the 3D steady wind flow field around standard high building CAARC in atmospheric boundary layer was numerically simulated with software Fluent 6.3. And upon the comparison with those from wind tunnel test, it was found that numerical simulation was a feasible way to study the wind flow around high building and the distribution of wind pressure in the building’s surface. The four proposed models can reach the accuracy from the actual demand. Furthermore, it was also shown that, the numerical results were approximate to those from wind tunnel tests in the windward while between those from NPL and TJ 2 tests in the side and leeward. The pressure on the windward surface was positive with the maximum at 2/3 height and the minimum on the sides and the bottom. The pressures on the leeward surface and two sides were negative. There were little differences among the results of the four models.