Evaluation of CFD Simulation Using Various Turbulence Models for Wind Pressure on Buildings Based on Wind Tunnel Experiments

Abstract

Various Reynolds Average Numerical Simulation (RANS) turbulent models of Computational Fluid Dynamics (CFD) are widely used in numerical simulation of wind environment with buildings areas, but none of them is the most accurate or applicable one. In order to evaluate different numerical simulation models, wind tunnel experiments were designed to validate the results of numerical simulations. Rigidity models surface pressure measurements were employed to get pressure values on several building surfaces among buildings, which accurately assessed different simulating results of wind field effects on buildings. By comparing and validating turbulent models with measurements of wind tunnel experiments, useful guidelines and references were given to choose appropriate turbulent model for numerical wind environment researches and practical application. This study presents the RNG k- model including the DVM treatment has a relative good predicting for both the plan view of velocity contour and the surface pressure. In addition, the Spalart-Allmaras models can be more appropriate predicting results for surface pressure measurements among all models, but its reliability of buildings wind environment prediction is not cleared yet. The future work will be needed.