Development of a mathematical model for the aerodynamics of the cooling air unit blow‑through circuit

Аuthors

Kupchik V. S., Fevralskikh A. V.^*

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

*e-mail: a.fevralskih@gmail.com

Abstract

In modern passenger aircraft, ensuring comfortable conditions in the pressurized cabin and equipment compartments requires efficient operation of the air conditioning system (ACS). The development of methods for studying the aerodynamics and heat transfer of the ACS is one of the current directions in the science of fluid, gas, and plasma mechanics, since a reliable determination of the physical characteristics of flows in such systems necessitates a comprehensive consideration of the external flow around the aircraft, internal flows, the presence of separated flows in the internal ducts of the ACS, as well as the flow features in the constituent units.

This article presents the results of developing a mathematical model for the aerodynamics and heat transfer of the blow‑through circuit of the cooling air unit within the air conditioning system and the inert gas system (IGS) based on computational fluid dynamics methods. The results of studies on mass transfer, temperature, and velocity characteristics are provided, along with validation results of the developed mathematical model by comparison with test data at both the individual component level and the system level.

Keywords:

mathematical modeling; aircraft aerodynamics; blow‑through circuit; cooling air unit; air conditioning system

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