An Approach for Estimating Dispersion in Variable Intensity: An Example of Estimating a Real Case

Abstract

Gaussian models are the important tools in the development of successful emergency response strategies of air pollutants or hazardous materials. As numerical dispersion models via predicting the influencing area affected by the passage of hazardous gas, Gaussian models are extremely important in leaking emergency response. The Gaussian Puff model and the Gaussian Plume model have been wildly used in calculating mesoscale dispersion of air pollutants from point sources. In the meantime, the Gaussian Puff model is suitably used in instantaneous dispersion while the Gaussian Plume model in continuous dispersion of invariable intensity. Little to no attention has been given to simulate the chemical accident of dispersion in variable intensity, which the accidents cannot either be considered as instantaneous dispersion or continuous dispersion as well. This paper proposed the Accumulated Gaussian model for such instance of dispersion in variable intensity take place in pipeline or in tank. This paper also discusses a case of chemical spill, in which Accumulated Gaussian model has been used to modify the situation at the time.