Influence of building block configuration on urban ventilation efficiency by CFD analysis

Abstract

    This research is focused on the wind characteristics and the ventilation performance in the street canyon. In order to achieve the same flow as the actual wind, four cases with varying building height and array were made. To confirm the relevance of affection of region of pollutants and the form of canyon, the height of 7.5 m for the pollutants release was set in each case.
    About the performance of ventilation, SVE3 and Exchange Ratio were obtained from the pollution solutions which was calculated in each case. And we analyzed the ventilation efficiency in canyon, based on which, how ventilation performance is influenced by the form of canyon and the pollution region has been studied.