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Flow Structure of Short-Length-Scale Disturbance in an Axial-Flow Compressor

文献类型：期刊论文

作者Lin, Feng1; Zhang, Jingxuan2; Chen, Jingyi1; Nie, Chaoqun1
刊名JOURNAL OF PROPULSION AND POWER
出版日期2008-11-01
卷号24期号:6页码:1301-1308
英文摘要Short-length-scale disturbances, also called spikes, are often responsible in triggering rotating stall in axial-flow compressors. One hypothesis suggests that spikes can be the consequence of dynamic interaction among forward-spilled tip-leakage flow, the main throughflow, and the reversed flow. However, the transit process of such a dynamic interaction in the vicinity of the rotor tip clearance and, thus, the physical images of the flow structure of a spike are still unknown. In this paper, we present a numerical study with a novel scheme for a low-speed axial-How compressor by incorporating rotating inlet distortion. Because the inlet distortion will overload a portion of the blades while keeping the rest working normally, the short-length-scale disturbances can be observed without advocating the computational difficulty of simulating a fully stalled compressor. Two unsteady simulations using a commercial, three-dimensional, time-accurate, Reynolds-averaged Navier-Stokes solver are performed: one for a one-fourth rotor annulus with finer grids and the other for the entire rotor annulus with coarser grids. After the code is validated by comparing experimental results with the simulation for the entire rotor annulus, the one-fourth-annulus simulation is used to unveil the flow physics. As elucidated from the computational results, the complete birth-to-decay process of the short-length-scale disturbances is captured for the first time. The corresponding 3-D flow structure is also revealed. It is shown that the effects of dynamic How interaction at the tip extend beyond the tip region and deeply into the blade span. A horn-shaped vortex with one end at about 30% of the blade span and the other end at the casing is formed, which generates a low-pressure dip in the casing-pressure measurement. The spike, as identified from casing-pressure measurement, corresponds to a flow image in which the vortex rotates around the annulus.
WOS标题词Science & Technology ; Technology
类目[WOS]Engineering, Aerospace
研究领域[WOS]Engineering
关键词[WOS]ROTATING-STALL INCEPTION ; INLET-DISTORTION ; STAGE
收录类别SCI
语种英语
WOS记录号WOS:000260886000013
公开日期2015-12-22
源URL[http://ir.etp.ac.cn/handle/311046/106344]  
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1.Chinese Acad Sci, Inst Engn Thermophys, Beijing 100080, Peoples R China
2.Beijing Univ Aeronaut & Astronaut, Sch Jet Propuls, Beijing 100083, Peoples R China
推荐引用方式
GB/T 7714		 Lin, Feng,Zhang, Jingxuan,Chen, Jingyi,et al. Flow Structure of Short-Length-Scale Disturbance in an Axial-Flow Compressor[J]. JOURNAL OF PROPULSION AND POWER,2008,24(6):1301-1308.
APA Lin, Feng,Zhang, Jingxuan,Chen, Jingyi,&Nie, Chaoqun.(2008).Flow Structure of Short-Length-Scale Disturbance in an Axial-Flow Compressor.JOURNAL OF PROPULSION AND POWER,24(6),1301-1308.
MLA Lin, Feng,et al."Flow Structure of Short-Length-Scale Disturbance in an Axial-Flow Compressor".JOURNAL OF PROPULSION AND POWER 24.6(2008):1301-1308.

入库方式： OAI收割

来源：工程热物理研究所

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