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Effects of low Reynolds number on flow stability of a transonic compressor

文献类型：期刊论文

作者Zhao, Shengfeng; Lu, Xingen; Zhu, Junqiang; Ge, Han; Yang Chengwu
刊名PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING
出版日期2015-03-01
卷号229期号:4页码:601-611
关键词Low Reynolds number transonic compressor flow stability numerical simulation
英文摘要As the aircraft cruising at high altitude over 20,000m with subsonic speed, the Reynolds number in terms of the compressor blade becomes very low and the compressor performance decreases dramatically due to separation of boundary layer and secondary-flow. The main objective in this paper is to understand the physical mechanism by which Reynolds number affects the compressor stable range. In this paper, a series of steady and unsteady numerical simulations were carried out for a transonic compressor rotor under several conditions, which corresponded to the operations at sea level, and at high altitude. Detailed analyses of the flow visualization have exposed the different flow topologies of the complicated secondary flow. It was found that the transonic axial-flow compressor rotor used in current investigation was prone to tip stall behavior, and the complex flow mechanisms which occur near the blade tip are found to be the key factors for the limited flow stability both under high Reynolds number and low Reynolds number. Under high Reynolds number, the tip flow field was dominated by the low momentum zones generated by the interaction between tip leakage flow and incoming flow, and with the decrease of Reynolds number, the tip leakage flow was weakened and the low-momentum fluid due to the surface boundary layer separation and radial transport of low-energy fluid was dominant in the tip flow.
WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Aerospace ; Engineering, Mechanical
研究领域[WOS]Engineering
关键词[WOS]AXIAL COMPRESSOR
收录类别SCI
语种英语
WOS记录号WOS:000350485600002
公开日期2015-12-22
源URL[http://ir.etp.ac.cn/handle/311046/98931]  
专题工程热物理研究所_中国科学院工程热物理所（论文库）_期刊论文（SCI）
作者单位Chinese Acad Sci, Inst Engn Thermophys, Key Lab Light Duty Gas Turbine, Beijing 100190, Peoples R China
推荐引用方式
GB/T 7714		 Zhao, Shengfeng,Lu, Xingen,Zhu, Junqiang,et al. Effects of low Reynolds number on flow stability of a transonic compressor[J]. PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING,2015,229(4):601-611.
APA Zhao, Shengfeng,Lu, Xingen,Zhu, Junqiang,Ge, Han,&Yang Chengwu.(2015).Effects of low Reynolds number on flow stability of a transonic compressor.PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING,229(4),601-611.
MLA Zhao, Shengfeng,et al."Effects of low Reynolds number on flow stability of a transonic compressor".PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART G-JOURNAL OF AEROSPACE ENGINEERING 229.4(2015):601-611.

入库方式： OAI收割

来源：工程热物理研究所

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