【摘要】 航空发动机整机环境下的部件特性精细化模拟是提升发动机整机性能仿真精度的重要手段。针对某型自由涡轮式单转子涡轴发动机，研究了考虑整机环境影响下的组成部件高精度仿真模型建模方法，并基于部件级的航空发动机零维整机仿真模型建模方法，建立了耦合部件高精度模型的发动机整机性能仿真模型。基于该仿真模型，开展了发动机整机性能仿真算例计算及试验结果对比分析。结果表明：发动机非设计状态下，耦合部件高精度模型的整性能仿真模型计算得到的轴功率、耗油率等发动机总体性能参数仿真结果与试验值结果误差小于3%,表明耦合部件高精度模型的涡轴发动机整机性能仿真方法能够有效提升发动机整机性能仿真精度。更多还原

【Abstract】 The refined simulation of component characteristics in the complete aero-engine environment is a crucial method for enhancing the simulation accuracy of engine performance. For a certain type of free-turbine single-rotor turboshaft engine, a high-precision simulation model modeling method for component parts considering the influence of the complete engine environment was studied. Based on the component-level zero-dimensional complete aero-engine simulation model, an engine performance simulation model coupled with high-precision component models was established. Using this simulation model, engine performance simulation cases were conducted and experimental results were compared and analyzed. The results indicate that under non-design conditions of the engine, the overall performance simulation model calculated using the high-precision model of the coupled components yields simulation results for overall engine performance parameters such as shaft power and fuel consumption with an error of less than 3% compared to experimental values. This demonstrates that the simulation method of the entire turboshaft engine using high-precision coupled component models can effectively improve the simulation accuracy of the overall engine performance.更多还原