Flow and performance calculation of a new integrated form of heat exchanger

Abstract

With the development of domestic commercial passenger aircraft, the performance requirements and integration level of the aircraft ram air system have gradually increased. In this paper, the modular integrated design of the air-conditioning secondary, primary heat exchanger, auxiliary cooling heat exchanger, air quasi-secondary, and primary heat exchanger in the system is carried out to obtain a new integrated form of heat exchanger. The CFD mathematical model of the corresponding ram air system and the Simulink simulation platform, a single-channel test bench is built to verify the effectiveness of the CFD mathematical model and the Simulink simulation platform, and the flow distribution and performance of the corresponding ram air system under different flight conditions are calculated.