Experiment and simulation on a thermal management scheme of intermediate circulation based on heat current method

Abstract

With the increment of Mach number, the heat dissipation load of aeroengine increases significantly. Systematic thermal management has become an urgent problem to be solved. The intermediate cycle system is one of the widely used thermal management solutions. This paper builds an experiment platform of thermal management system of aeroengine including intermediate cycle to explore the influence of working condition on the systematic heat transportation. Water is selected as the working medium in the experiment. The experiment results show all the temperatures of working medium decrease with the flow rate increment of working medium in fuel oil circuit. The temperature of working medium flowing to the afterburner increases with the temperature increment of lube oil circuit1 and 2. But only the temperature of working medium flowing to the main combustor increases while the temperatures of lube oil circuit1 increase. At last, using heat current method and flow resistance model builds the systematic simulation model. The relative errors between the simulation and experimental values are all less than 5%. The simulation results show all the temperatures of working medium increase with the increment of fuel oil circuit temperature. The working medium temperature flowing to the afterburner and lube oil circuit2 increases with the flow rate increment of lube oil circuit3. It reveals the heat transfer principle of the intermediate circulation thermal system under different working states and provides a powerful guidance for the systematic analysis and design.