MODELING OF PROCESSES IN THE COMBUSTION CHAMBER OF A JET ENGINE

Katrenko, MО, Strelnikov, GO, Pryadko, NS, Vasilyv, SS
Space Sci. & Technol. 2026, 32 ;(2):11-21
https://doi.org/10.15407/knit2026.02.011
Publication Language: Українська
Abstract: 
An important design component of the heat engine process used in an aircraft is the selection and study of the main energy-
fuel characteristics, namely the combustion product temperature, the thermal eff ect of the chemical reaction, the components
of the combustion products, etc. Th e search for a universal simulation approach to fuel combustion processes that would
provide comprehensive, valid information to achieve the jet engine design parameters is relevant.
Th e method’s universality should consist of the ability to calculate the fuel combustion characteristics in any aggregation
state, determine the combustion product composition and obtain data to determine the main engine parameters.
Th e use of modern mathematical modeling methods, for example, the ANSYS package, is characterized by complexity, a
need for suffi cient hardware resources, and a lot of time. Th ere is an alternative method for modeling thermogasodynamic
processes of thermal energy supply of jet engines. Comparison of modeling methods requires an analytical assessment of
results against the criteria of minimum time and resources, with the highest possible accuracy. Th is task determines the
relevance of this work.
Th e existing theoretical foundations and methods for designing jet engines for various purposes, along with the world
experience used in their creation, show and characterize many features in modeling thermogasodynamic processes inherent
to engines with heat supply at constant pressure. Th e main results of using the method for modeling combustion processes in
chemically reacting, multicomponent, heterogeneous thermodynamic systems, based on the principle of maximum entropy,
are presented for calculating thermogasodynamic parameters of various fuels used in jet engines.
Comparative results of mathematical modeling of the fuel combustion process in jet engines, along with trends in their
change, are presented. Th e correctness of the methodological approaches to the conducted study is verifi ed by the results of
other authors. Th e need for clarifi cation, addition, and ordering of the selected method of mathematical modeling is shown.
Th e novelty of the study lies in the collection of new and comparative data on the characteristics of fuel combustion processes
in thermal jet engines. Th e results obtained allow us to establish trends in the characteristics of the fuel combustion process.
Th e practical signifi cance of the presented results lies in the possibility of using the obtained data to calculate the main
parameters in jet engine design.
Keywords: characteristics, combustion chamber, fuel components, jet engine, model, system, thermodynamic parameters
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