轴流压气机转子三维非定常流场旋涡流动分析

季珩; 侯安平; 熊劲松; 周盛

轴流压气机转子三维非定常流场旋涡流动分析

北京航空航天大学航空发动机气动热力重点实验室, 北京 100083

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出版历程
- 收稿日期: 2005-04-29
- 修回日期: 2005-10-12
- 刊出日期: 2006-04-28

Analysis of the 3D Unsteady Vortex Flow Inside Axial Flow Compressor Rotor

China National Key Laboratory of Aeroengine Aerodynamics & Thermodynamics, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

摘要

摘要: 通过数值模拟,对一个低压压气机转子的非定常流场进行结构分析和频谱分析。通过对于流场时均图和等熵动画图的分析,捕捉到了流场的流动特性和流场中旋涡的存在范围,探索了叶片前缘和尾缘的脱落旋涡以及角涡之间的相互作用,相互影响以及这几种旋涡随时间空间变化的运动规律。对于有脱落现象的旋涡,利用动态演示图估测和频谱分析的方法判定其涡脱落频率,得到了尾缘脱落旋涡和角涡的两种脱落频率。本文的工作为今后采取主动、被动控制,改进压气机的性能提供参考依据。
- 航空、航天推进系统 /
- 非定常分离流 /
- 结构分析 /
- 频谱分析
Abstract: Based on the numerical simulation method,frequency spectrum analysis and structure analysis were conducted for the three dimensional unsteady flow inside the compressor rotor.Through the analyses of the time-average flow field and the animated isentropic cartoon,we recognize the characteristics of the flow field,the existence range of the vortex shedding.The interaction of the leading edge and trail edge vortex and corner vortex was investigated,and the rule of their development and their effect to each other were also discussed along with the frequency spectrum analysis.For separated flow,dynamic demonstration graph and spectrum analysis were used to estimate the vortex shedding and corner vortex frequencies.The work can be used as theoretical foundations for active and passive control of compressor to improve its performance.
- aerospace propulsion system /
- separated flow /
- structure analysis /
- frequency spectrum analysis

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参考文献(5)

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