IMPROVEMENT OF THE MATHEMATICAL DESCRIPTION OF THERMOPHYSICAL PROPERTIES OF ALTERNATIVE MOTOR FUELS BASED ON THE MODIFIED THERMODYNAMIC THEORY OF DISTURBANCE

Abstract

In the study, the purpose of which was to improve the mathematical apparatus based on the modified thermodynamic perturbation theory for describing the thermophysical characteristics of alternative motor fuels with a spherical configuration of interacting structural elements and an arbitrary aggregate state, the formal scheme of the modified perturbation theory was consistently constructed, the main characteristics of the model system were described, the parameters of the interaction potentials of the alternative fuel components were described, the thermophysical properties of the alternative fuel components were obtained by calculation, the thermodynamic properties of the alternative fuel components were calculated, the results of the calculation of the thermodynamic characteristics of the alternative fuel were analyzed and illustrated in the form of isotherm of phase equilibrium diagrams and data tables. The object of the study is the thermophysical characteristics of traditional, alternative and mixed motor fuels in a liquid or gaseous aggregate state. The subject of the study is a mathematical apparatus based on the modified thermodynamic perturbation theory for describing the thermophysical characteristics of motor fuels. The scientific novelty of the study results lies in the fact that a mathematical apparatus based on a modified perturbation theory has been improved for a comprehensive description of all thermophysical characteristics of motor fuels of any genesis, i.e. traditional, alternative and mixed, which are in both liquid and gaseous aggregate states in terms of reducing the calculation time and reducing the error of obtaining thermophysical characteristics in comparison with reference and experimental data. The practical significance of the research results is that the improved mathematical apparatus is marketable for providing accurate information to the composition of the initial data set in research on the production, storage, transportation, distribution, use of motor fuels of any genesis, which are in different states, as well as forecasting the course and results of processes of atmospheric pollution by gaseous products of complete and incomplete combustion of fuel components in combustion chambers of various types of heat engines.