SIMULATION OF TWO-PHASE FLOW OF COMPOSITE FUEL IN THE COMSOL MULTIPHYSICS ENVIRONMENT

Abstract

In the article, the subject of the study is the modeling of a two-phase flow of a composite fuel consisting of water and coal, while a macroscopic model of a composite fuel production technology was created in the COMSOL Multiphysics software environment, that is economically and environmentally efficient. The purpose of creating the model is to mathematically analyzing the state, movement and distribution of coal particles in water, optimizing the composition and characteristics of the fuel to improve the stability and efficiency of the composite fuel. The study used the equations of the conservation law of momentum, the law of continuity, the law of conservation of the mixture mass using the Laminar Flow parameter of the COMSOL Multiphysics program. As a result of research based on the created model, the influence of coal grade, water viscosity, coal particle size, concentration of coal and water in the mixture on the quality of coal-water fuel was studied and analyzed. The peculiarity and scientific value of the results obtained lies in the fact that the quality of coal-water fuel is checked by the state of coal particles in water and the nature of their migration during mixing using the created macroscopic model. The practical significance of the results obtained lies in the possibility of using plasticizers and stabilizers to improve the characteristics of composite fuels in industrial conditions. In the future, research may be aimed at modeling the influence of temperature and pressure on improving the quality of composite fuel.