Fire Safety Science Digital Archive

Mathematical model of a large-scale dusty thermal in a stratified non-uniform atmosphere is presented, which takes into account the compressibility of atmosphere and active effect of pollutant on the motion of carrier gas . An entrainment of various pollutants by a rising thermal is investigated, a final distribution of particulate matter density formed in atmosphere after rise of the thermal is obtained. Quantitative boundaries of applicability of a wide-spread model of "passive" impurity are established.