Atmosphere protection from pollution in case of emission of hazardous substances from a moving train carriage BILIAIEV M.M

Purpose. Development of a method for protection of atmosphere against pollution by burning solid rocket propellant within the moving railway carriage. Create a calculation method to substantiate the effectiveness of the proposed method of protection on the basis of numerical modeling of impurity scattering processes in the atmosphere. Methodology. To solve this problem developed a numerical model based on the application of multivariate equations of mass transfer. For the numerical integration of pollutant transport equation was used implicit ?change ? triangle? difference scheme. When constructing a difference scheme physical and geometric cleavage of the transfer equation is carried out in four steps. Unknown value of pollutant concentration at each step of cleavage is determined by the explicit scheme ? the method of point-to-point computation. When conducting computational experiments considered the speed of the wind flow, the speed of the train, the process of emission of chemically dangerous substances and neutralizer. On the basis of the numerical model a computational experiment to assess the level of air pollution if burned in a moving railway carriage of dangerous goods. The calculations for application of the neutralization of combustion products of solid rocket propellant. Findings. An effective way to protect against contamination of the atmosphere in the emission of hazardous substances from a moving rail car. A numerical model that allows to quickly calculate the air pollution in the event of an accident during transport of solid rocket propellant, as well as to calculate the rational parameters of the process of neutralization of pollutant. This model can be used for serial calculations modeling the different emergency scenarios. Originality. A new way to protect the atmosphere from contamination by release of hazardous substances from a moving railroad car. Developed a numerical model that allows to evaluate the effectiveness of the proposed method of protection taking into account those physical parameters that affect this process. Practical value. An efficient numerical model, so called ?diagnostic models? were considered for rapid calculation of the level of pollution of the atmosphere, and the atmosphere is provided a method of protection in emergency situations, in the case of solid rocket propellant transportation by railway.