A Modified Model for Predicting Accident Consequence of Gas Leakage

To predict accident consequence of gas leakage quickly and accurately, the well-known Gaussian plume model is modified, with consideration of influence of ground roughness, plume rise and multi-source leakage. Based on this modified model, a case study of toxic ammonia leakage from single source and multi-source is presented respectively, in which the spatial concentration of ammonia at any location is predicted and expressed as a concentration contour map corresponding to ammonia toxic criteria. Besides, the effect and significance analysis of parameters involved in modified model are discussed.