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

Research output: Contribution to journalArticle

59 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)2841-2852
Number of pages12
JournalJournal of Wind Engineering and Industrial Aerodynamics
Volume44
Issue number1-3
DOIs
Publication statusPublished - 1992 Oct
Externally publishedYes

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Numerical study on velocity-pressure field and wind forces for bluff bodies by κ-ϵ, ASM and LES'. Together they form a unique fingerprint.

  • Cite this