端壁移动对悬臂静子气动性能的影响
Effects of endwall movement on the aerodynamic performance of cantilevered stators
安广丰 1范竹 2于贤君 1刘宝杰1
作者信息
- 1. 北京航空航天大学航空发动机研究院,北京 100191;北京航空航天大学航空发动机气动热力国家级重点实验室,北京 100191
- 2. 北京航空航天大学航空发动机研究院,北京 100191
- 折叠
摘要
为了探究端壁移动对悬臂静子性能的影响,对轮毂移动与否、轮毂移动速度大小以及移动轮毂情况下间隙大小对某一低速轴流压气机悬臂静子内部流动及压气机性能的影响进行了详细的研究.结果表明,随着端壁移动速度的增加或者端壁移动情况下叶根间隙的减小,静子近轮毂区域的流动堵塞/流动损失减小、压气机性能得到提升,造成这一现象的主要原因是端壁移动情况下二次流的消失以及参与掺混的泄漏流流量的减小;端壁移动也会影响静子进口流场,进而影响转子的特性,但相对于对静子特性的影响,转子特性的变化幅值较小.
Abstract
To explore the impact of endwall movement on the performance of cantilevered stators,the effects of hub movement,hub movement speed and the gap size of cantilevered stators on the internal flow and performance of a low-speed axial compressor were researched in detail.The results showed the flow blockage/loss of hub area was reduced and the compressor performance was improved with the increase of the endwall movement speed or the decrease of the gap size in case of endwall movement.This phenomenon was mainly attributable to the disappearance of the secondary flow and the reduction of the leakage flow involved in the mixing.The endwall movement also affected the inlet flow field of the cantilevered stators,which in turn affected the characteristics of the rotor.However,compared with the effect on the characteristics of the stator,the change amplitude of the rotor characteristics was relatively small.
关键词
端壁移动/悬臂静子/气动性能/泄漏流/轴流压气机Key words
endwall movement/cantilevered stators/aerodynamic performance/leakage flow/axial flow compressor引用本文复制引用
基金项目
国家自然科学基金(51790511)
国家自然科学基金(51806004)
国家科技重大专项(J2019-Ⅱ-0004-0024)
出版年
2024
NETL
NSTL
万方数据