Расчет локального загрязнения атмосферы при чрезвычайной ситуации в хранилище твердого ракетного топлива

Abstract

EN: Разработана численная модель для прогноза загрязнения атмосферы при горении твердого ракетного топлива. Модель основана на применении уравнений Навье − Стокса и уравнениz переноса примеси в атмосфере. Для численного интегрирования используются неявные разностные схемы. Представлены результаты проведенных вычислительных экспериментов.

EN: Purpose. Development of CWE (Computational Wind Engineering) of model for the forecast of pollution of the atmosphere when burning solid rocket fuel in the storage, not demanding big expenses of computer time and use of powerful personal computers when carrying out expected calculations. The pollution forecast on the basis of the developed model is carried out on the scale of «microscale». Methodology. For numerical integration of the equations of Navier — Stokes implicit differential schemes are used. For numerical integration of the equation of transfer of impurity is used alternately — the triangular implicit differential scheme of splitting. Findings. The offered model allows to calculate hydrodynamics of a wind stream taking into account its interaction with a gas stream — a product of burning of rocket fuel. The developed model was used for an assessment of efficiency of use of the partition placed on a shaft for local protection of the atmosphere from pollution at an emergency situation in storage. Originality. The numerical model, allowing to consider essential factors, such as influence of buildings, a relief and the meteoconditions, influencing process of dispersion of polluting substances in the atmosphere, and formation of a zone of pollution at emergency situations of chemically dangerous substances connected with issue is created. Practical value. The developed numerical model can be used in practice for expected calculations of possible zones of pollution at emergency situations on chemically dangerous objects, and also when developing PEA (the plan of elimination of an accident).