Influence of the CFD model parameters on the spatial distribution of pollutants inside the open pit space, using the example of the ANSYS Fluent software package

The relevance of the research is due to the increased interest of specialists in the field of open pit aerology in the use of modern software systems for calculating the aerological parameters of the atmosphere in deep open pits. Experts raise questions about the extent to which the air flows at the bottom of the open pit are reduced, how atmospheric air circulates inside the open pit space, and what parameters of the pollution source can be used to monitor the distribution of harmful substances in the open pit space. The paper presents the results of analyzing numerical experiments on modeling the process of polluting from the stationary pollution sources and the atmospheric air circulation depending on the height of obstacles located on the upper side of the open pit. The modeling was carried out using a three-dimensional computational fluid dynamics (CFD) model of the atmosphere at the Zhelezny open pit mine of Kovdorsky GOK JSC developed in the ANSYS Fluent software package with variations in the territory adjacent to the open pit. The set of equations used to describe the aerodynamics of the open pit atmosphere is classical for solving problems of this kind.