| 陶 睿1 ，赵军1 ，蒋进1 ，王坤1 ，王立纲 2.混排涡扇发动机加力特性仿真计算[J].航空发动机,2025,51(6):84-93 |
| 混排涡扇发动机加力特性仿真计算 |
| Simulation of Afterburning Characteristics of a Mixed-Flow Turbofan Engine |
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| DOI： |
| 中文关键词: 混排涡扇发动机 总体性能 加力燃烧 部件级建模法 耗油率 拉瓦尔尾喷管 |
| 英文关键词:mixed-flow turbofan engine overall performance afterburner component-level modeling method specific fuel
consumption Laval nozzle |
| 基金项目:四川省科技计划项目（2019YJ0722）资助 |
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| 摘要点击次数: 1975 |
| 全文下载次数: 541 |
| 中文摘要: |
| 为明确开启加力前后混排涡扇发动机性能的差异，通过Visual C++（VC）平台，采用部件级建模法依次建立了开加力与
未开加力状态混排涡扇发动机的变比热仿真计算模型，引入了可调面积比拉瓦尔尾喷管计算模块，并通过仿真对比分析，开展了
加力燃烧混排发动机不同工作循环参数匹配规律与3大特性的研究。结果表明：提高主燃烧室出口总温的同时，选取所适配的最
佳风扇增压比，可使得混排涡扇发动机在全开加力状态下的净推力增大11.13%，耗油率（SFC）降低10.11%。在节流特性方面，降
低加力温度的过程中，应同时收小拉瓦尔尾喷管喉道面积；在高度特性方面，混排涡扇发动机在加力关闭状态下耗油率的降低幅
度高于全开加力状态下的；在速度特性方面，采用可调面积比拉瓦尔尾喷管的混排涡扇发动机的净推力增幅更大，耗油率更低。 |
| 英文摘要: |
| To clarify the performance differences of a mixed-flow turbofan engine before and after afterburning,performance models of
a mixed-flow turbofan engine were established based on the Visual C++(VC)platform using component-level modeling method. A calcula?
tion module for variable area ratio Laval nozzles was introduced,and the matching of different working cycle parameters and three major
characteristics of the engine were investigated. The results show that by increasing the outlet total temperature of the main burner while
selecting the optimal fan pressure ratio,the mixed-flow turbofan engine can achieve 11.13% net thrust increase and 10.11% specific fuel
consumption(SFC) decrease on fully afterburning state. On throttling condition, the throat area of the Laval nozzle should be reduced
simultaneously while reducing afterburning temperature. As altitude increasing,the SFC decreases faster when afterburner is off than that
when it is fully on. As flight mach number increasing,the engine equipped with a variable area ratio Laval nozzle exhibits greater increase
in net thrust and lower SFC than that with a fixed area ratio Laval nozzle. |
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