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

Part1 Field measurement of gas dispersion

Abstract

It is difficult to predict the dispersion in urban area accurately. This study aims to verify prediction of pollutant concentration in urban area based on wind tunnel experiment and numerical simulation. For this purpose, field measurements of gas dispersion and wind characteristics were conducted in the campus of Tokyo Polytechnic University for two days. From the results, even the difference in direction of the wind of around 10 degrees was shown to vary in a tendency of concentration and wind velocity distribution.