DISPERSION IN THE PRESENCE OF BUILDINGS

Buildings can significantly affect atmospheric dispersion. There is an infinite number of possible configurations of release and obstacle ar rangements, and no general theory exists to predict the dispersion of gas releases for all conditions. In this paper, two 'classes' of confi gurations, i.e. dispersion in the lee of buildings and dense gas dispe rsion over a fence, are discussed in detail and simple models are desc ribed. An example of the effects of multiple building arrangements is also presented.