To analyze and evaluate the performance characteristics of an air-oil radiator in a certain aero-engine,the numerical simulation method is adopted to study its heat dissipation effects and flow characteristics under different operating conditions.Firstly,the computational model of the air-oil radiatir of the aero-engine is discretized into a grid.Secondly,the standard k-w turbulence model and the finite volume method are used for numerical solving.Finally,the internal flow field of the oil ventilation cooling system is numerically simulated using Fluent software,analyzing the airflow and oil heat dissipation under different damper openings and ejector states.The results indicate that the airflow in the cooling air channel increases with the enlargement of the damper opening,and both the airflow and oil heat dissipation are enhanced when the ejector is activated,which is beneficial for oil cooling.The research findings not only validate the effectiveness of the computational model and numerical methods but also provide important basic data and theoretical support for further in-depth studies on the air-oil radiator reliability of the airo-engine.
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