航空发动机滑油系统稳态压力模型研究

Steady Pressure Model of the Aeroengine Oil System

以某型发动机滑油系统为研究对象,深入分析了系统的工作原理和部件结构特点。综合应用流体力学,工程热力学理论以及数值计算和实验的方法,建立了滑油系统主要部件的数学模型和管路压力损失的计算模型;在此基础上,依据发动机滑油系统良好状态下采集的数据,建立了滑油系统的稳态压力数学模型,为判断滑油系统性能衰退和故障提供参考依据。

Taking the oil system of certain aero-engine as a study object,the paper analyzes in-depth the working principles of the oil system and the structure characteristics of its components.Formulas for calculating the oil pressure losses in the pipelines and the mathematical model of the components are established by using fluid dynamics,engineering thermo-dynamics and numerical calculation and experimental data.Finally,the steady pressure model of the oil system is established according to the data acquired in the aero-engine oil system in good conditions,and the results by using this model provide the reference for judging the performance attenuation and the fault of the oil system.The method of this paper can also be used for other aero-engines and its application value bears universality.