Simulation modeling of the soil flow movement process in the air, supplied by a ground gun while extinguishing a forest fire

Abstract

Abstract The article presents a technological scheme of the operation process of a soil-throwing unit, which has a milling-throwing working body and a guiding casing, and a developed simulation model of the process of movement in the air of a directed flow of soil particles supplied by a soil launcher when extinguishing a forest fire. The aim of the study is to assess the influence of soil and air flow parameters on the indicators of its suitability for extinguishing a ground forest fire by using simulation modeling of the process. The study of this work covers the process of flow, which received the necessary impulse from the milling cutters of the soil launcher. The theoretical description of this direction of research is complex, since it considers both the packing of flying particles and individually detached spherical elements that come into contact with air particles, also presented in the form of discrete elements. As a result of modeling the movement of soil in the air, a vertical cut of the system of fragments of soil and air, graphs of dependences on time, the average distance between soil elements and the average resistance force of the air environment were obtained.