A mathematical model for computation of gas mixture thermophysical properties

Аuthors

Kolomentsev A. I.^*, Zakharov S. A., Yakutin A. V.

Moscow Aviation Institute (National Research University), 4, Volokolamskoe shosse, Moscow, А-80, GSP-3, 125993, Russia

*e-mail: a.i.kolomentsev@yandex.ru

Abstract

A mathematical model is suggested to compute gas mixture thermophysical properties. This model is intended to support numerical simulation of work processes in liquid-propellant rocket micro-engines. The model structural and algorithmic features allow to adapt its using in regard to various kinds of gas mixtures. The model enable a computation of such properties of the gas mixture and its components as density, heat capacity, dynamical viscosity and heat conductivity based on approximation equations with respect to pressure and temperature values. A software package is developed to implement the suggested model. Results of numerical experiments obtained by using the package are provided and discussed.