STUDY OF EFFICIENCY OF SOIL-THROWER AND FIRE-BREAK MAJER ON THE BASIS OF MATHEMATIC SIMULATION

Introduction. Combating forest fires is one of the most pressing problems of forestry. Increase in the number of fires is associated with global climate change on our planet. At present, requirements to the level of forest protection have increased. Therefore, it is necessary to increase the amount of firefighting equipment in forests and increase material resources of forest fire services. The article presents a mathematical model of interaction between working bodies of soil-thrower and soil. This mathematical model enables to investigate the efficiency of the machine on the basis of computer experiments. The task of the research is to conduct a multifactor theoretical study of the processes of formation of soil flow, its movement in the air and impact on the edge of forest fire using the created model. Materials and methods. Development of highly detailed simulation model is based on modern mathematical methods focused on the use of high-performance computing equipment. A modern SPH-method (Smoothed Particle Hydrodynamics) has been used to simulate soil and air environment, within which environments are divided into a multitude (from 10,000 - 100,000) of individual spherical elements interacting with each other and moving according to the laws of classical mechanics and aerodynamics. Results of research. A mathematical model of a machine for extinguishing forest fires has been obtained. It enables to choose optimal parameters of soil-thrower working bodies. It allows reducing time and costs for design and technological work on the production of soilthrower. Discussion and conclusions. A computer program has been developed. The computer program enables to investigate the influence of the main parameters of soil and soil-thrower on productivity, quality and power consumption. This program is written in the programming language Object Pascal in the Borland Delphi environment.