一种微型涡轮发动机导向器改进方案

宣建光; 邱建; 夏晨; 黄国平

一种微型涡轮发动机导向器改进方案

南京航空航天大学能源与动力学院,南京 210016

基金项目: 国家自然科学基金(50576034); 基础预研项目

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出版历程
- 收稿日期: 2009-11-15
- 修回日期: 2010-04-12
- 刊出日期: 2010-12-28

Improvement of a micro-turbine nozzle

College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

摘要

摘要: 为了提高发动机性能,克服微型涡轮发动机(MTE)的尺度小等因素导致其导向器内流动损失大的缺点,采用了整体叶片式导向器设计技术对某MTE-C微型发动机涡轮导向器进行了改型设计.首先采用NAPA软件对MTE-C微型发动机的整体叶片式导向器进行数值模拟,通过流场分析得到了原型导向器设计中导致流动效率低下的不足之处,并以此为理论依据,对导向器进行了改进.改进型导向器的整级数值模拟结果表明,涡轮在设计点的效率提高了15%, 且在宽广的工作范围内其通流能力和效率均得到了明显的提升.
- 微型涡轮发动机 /
- 涡轮导向器 /
- 数值模拟 /
- 改进设计 /
- 流量特性 /
- 效率特性
Abstract: The compact configuration and small size of the micro-turbine engine (MTE) cause the large flow loss in the micro-turbine nozzle,so the micro-turbine nozzle has been modified to reduce the flow loss and improve the performance.The numerical simulation of the original turbine nozzle was completed by NAPA program,and the reasons for the low performance were acquired by flow field analysis.The vaned turbine nozzle was improved and the performance comparison between original and improved turbine nozzles was completed.The efficiency of turbine stage at designing point increases by 15%,and the flow rate and efficiency of turbine stage are enhanced remarkably within a wide working range.
- micro-turbine engine /
- turbine nozzle /
- numerical simulation /

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参考文献(13)

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