【摘要】 城市内建筑密度大,开放空间小,绿化范围小,人口密度高等等诸多因素使城市环境内危险气体扩散问题变得独具挑战性.本文结合了国内外最新的一些科研及实施进展,对在我国中小型城市,尤以贵阳为例探讨了对有毒有害气体的突发性排放的动态模拟的可能性及实施方法.更多还原

【Abstract】 High building density,narrow streets,small open spaces and above all large population in a urban environment present a special challenge and urgency for modelling tools with which dynamic and quantitative prediction could made possible.This paper reviews the modelling studies on gas dispersion modelling with a special focus at micro scale modelling and modelling methodology.It proposes a semi-dynamic modelling approach that solves firstly a steady flow field and then dynamic dispersion modelling.更多还原