双级对转压气机的失速机理

李晓军; 高丽敏; 谢建; 刘波

双级对转压气机的失速机理

西北工业大学动力与能源学院,西安 710072

基金项目: 国家自然科学基金(51076132); 新世纪优秀人才支持基金; 航空基金(2010ZB53014)

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出版历程
- 收稿日期: 2011-12-22
- 刊出日期: 2013-01-28

Rotating stall mechanism of dual-stage contra-rotating compressor

School of Power and Energy, Northwestern Polytechnical University,Xi'an 710072,China

摘要

摘要: 在对实验室对转压气机进行定常数值模拟的基础上,开展了对转压气机旋转失速机理的初步研究.研究结果表明:①该对转压气机在近失速工况存在突尖波型失速初始扰动;②在近失速点转子2中间隙泄漏涡在三维空间上迅速发展,导致转子2流道严重堵塞,引起压气机内部失稳;③由于转子2叶片排存在较大的气动负荷,其叶顶间隙泄漏涡的发展情况很大程度上决定着对转压气机的稳定性.
- 旋转失速机理 /
- 间隙泄漏流 /
- 近失速工况 /
- 数值模拟 /
- 对转压气机
Abstract: Based on steady numerical simulation of contra-rotating compressor in lab, a numerical investigation of the rotating stall mechanism of a contra-rotating axial flow compressor was conducted.The study shows that:(1) the rotating stall inception which appears near the stall point is “spike” type;(2) the tip clearance vortex in rotor 2 develops rapidly near the stall point and the passage is chocked,which cause the instability of the whole compressor;(3) the aerodynamic stability of compressor is determined by the development of tip clearance vortex in rotor 2 because of the high loading on the blades.
- rotating stall mechanism /
- tip clearance leakage /
- near stall condition /
- numerical investigation /
- contra-rotating compressor

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参考文献(15)

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