NUMERICAL MODELING OF TEMPERATURE PLUME FORMATION OF NON-ISOTHERMAL LIQUID INJECTIONS

Abstract

This paper presents the results of computational experiments to study the formation of a spray and a temperature plume of non-isothermal liquid injections under high turbulence. Numerical modeling of atomization and combustion of liquid fuel injections and the influence of the initial gas temperature in the combustion chamber on these processes has been carried out. The temperature in the combustion chamber varied from 700 K to 1500 K for two types of liquid fuels: octane and dodecane. The distributions of liquid fuel droplets along the radii and temperature at various points in time are constructed. The influence of the initial temperature on the concentration characteristics of various types of fuel is revealed. As a result, it was found that at a pressure of over 80 bar with high turbulence, the gas temperature equal to 900 K was taken as optimal. At this temperature, the chamber is heated to high temperatures and the concentration of the resulting reaction products is the lowest. The obtained results can be applied in the construction of the liquid fuels’ combustion theory and will contribute to a deeper understanding of the complex physical and chemical phenomena that occur in combustion chambers.