Simulation Research On Thermal Characteristics Of Airborne Electromechanical Thermalmanagement System Based On Amesim

With the development of aviation technology and the increase of airborne equipment,it is urgent to improve the efficiency of thermal management system.This paper takes a certain type of aircraft as the research target,uses AMESim to build a simulation model of integrated thermal management system with fuel as the final heat sink,and conducts simulation analysis on its thermal characteristics.Firstly,through the demand analysis of thermal management system,a modeling scheme of integrated thermal management system was designed,and the boundary conditions required in the scheme were studied by numerical calculation method.Besides,AMESim and Labview software were used to build the model test platform.Then,AMESim software is used to build simulation models of key components according to the physical characteristics of the components,and the component models are verified and modified through experimental data.Based on the modified component model,the simulation model of the fuel and environmental control subsystem is established,and the accuracy of the subsystem model is verified by the design requirements of each subsystem.Finally,based on the component and subsystem models,the overall model of the thermal management system is established,and the thermal characteristics of the thermal management system under the open loop and fuzzy self-tuning PID control mode are simulated and analyzed.The research conclusions are as follows:Firstly,the physical parameters of each component are fully considered in the system component model,and the accuracy of the component model is verified by comparing the test results with the simulation results;Secondly,the built environment control and fuel subsystem not only considers the parameters of each component inside the subsystem,but also considers the external parameters such as flight altitude and flight speed,and meets the thermal characteristics design requirements of each system.Thirdly,the simulation analysis of the integrated thermal management system is carried out.On the one hand,the open-loop state is analyzed to verify the accuracy of the model of the integrated thermal management system.On the other hand,the fuzzy self-tuning PID control method can improve the heat transfer efficiency of the system.