Numerical study on velocity-pressure field and wind forces for bluff bodies by κ-ϵ, ASM and LES

S. Murakami, A. Mochida, Y. Hayashi, S. Sakamoto

研究成果: Article

59 引用 (Scopus)

抜粋

Velocity-pressure fields and wind-induced forces on and around a building model are analyzed by means of numerical simulations. In this study, three types of well-known turbulrnce models, namely κ-ε{lunate} Eddy Viscosity Model (κ-ε{lunate} EVM), Algebraic Stress Model (ASM) and Large Eddy Simulation (LES) are used. In the first half of the paper, three-dimensional (3D), time-averaged flowfields around a cube within a surface boundary layer are predicted using these three turbulence models with similar boundary conditions. The accuracy of these simulations is assessed by comparison with results of wind tunnel tests. The results of LES show the best agreement with the experimental data. In the latter part, unsteady flowfield around a square prism is predicted by LES. Results of 2D and 3D computations are compared with experimental data. It is confirmed that the results of the 3D computation correspond very well to the experimental ones, while the results of the 2D computation include some significant discepancies.

元の言語English
ページ(範囲)2841-2852
ページ数12
ジャーナルJournal of Wind Engineering and Industrial Aerodynamics
44
発行部数1-3
DOI
出版物ステータスPublished - 1992 10
外部発表Yes

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Renewable Energy, Sustainability and the Environment
  • Mechanical Engineering

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