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提出了一种航空发动机整机全流域零维仿真方法。该方法采用模块化建模的思想,集成并实现了发动机过渡态总体性能模型与空气系统模型之间的动态数据交互和耦合求解,基于面向对象的技术开发了模块化的仿真程序,以某涡扇发动机的核心机为对象建立了仿真算例,模拟并分析了过渡过程中空气系统各引气、汇流支路的动态变化及其对发动机总体性能参数的影响。结果表明:发动机主流道与内流空气系统的动态交互作用虽然并不会显著影响发动机过渡过程总体性能参数,但却足以造成空气系统各局部支路显著的非均衡响应,这是现代高性能航空发动机精细化设计中不应忽略的因素。
A zero-dimensional simulation method of whole airship of aeroengine is proposed. The method adopts the idea of modular modeling, integrates and realizes the dynamic data interaction and coupling between the transient performance model of the engine and the air system model, and develops a modular simulation program based on the object-oriented technology. The core engine of the fan engine is used as a simulation example to simulate and analyze the dynamic changes of the bleed air and confluence branch of the air system during the transition and its influence on the overall performance parameters of the engine. The results show that the dynamic interaction between the main flow passage and the inflowing air system does not significantly affect the overall performance parameters of the engine during the transient process, but it is enough to cause a significant imbalance response of the local branches of the air system. This is a result of modern high performance aviation Factors that should not be overlooked in engine refinement design.