Full scale experiment of gas dispersion in an urban area and its prediction by wind tunnel experiment and large eddy simulation

Part 4 Comparison of experimental and numerical results of gas dispersion

Abstract

This paper performs the Computational Fluid Dynamics(CFD) for predicting flow and dispersion fields in actual urban area, and validate the predictive accuracy for CFD compared with the wind tunnel experiment. Wind tunnel experiment and CFD were conducted in the Atsugi campus of TokyoPolytechnic University. In this study, the CFD model is based on the LES. Mean wind speed and mean concentration estimated by LES are in good agreement with wind tunnel experiment.