轮毂旋转对环形叶栅角区流场的影响

余春华; 蒋洪德; 袁巍; 李绍斌

轮毂旋转对环形叶栅角区流场的影响

1.
清华大学热能工程系,北京 100084
2.
北京航空航天大学能源与动力工程学院航空发动机气动热力国家级重点实验室,北京 100191

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出版历程
- 收稿日期: 2011-09-20
- 刊出日期: 2012-12-28

Effect of hub rotation on conner flow field of an annular cascade

1.
Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
2.
National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

摘要

摘要: 通过数值模拟来研究和分析某环形叶栅轮毂壁面旋转对静子叶根角区流动结构的影响.研究结果表明:轮毂正向转动可以减小叶栅端壁区的流动堵塞,轮毂端壁角区的流动结构由三维分离流动结构转变为泄漏涡占主导的端壁分离结构.轮毂壁面旋转带来的叶栅角区流动结构的变化根本原因在于端壁转动引起的叶栅根部间隙泄漏增强,阻碍了轮毂端壁附面层二次流向叶片吸力面角区的堆积.
- 压气机静子 /
- 轮毂旋转 /
- 角区分离 /
- 泄漏流 /
- 端壁二次流
Abstract: The effect of rotating speed on corner flow separation and its mechanism has been investigated by numerical simulation on an experimental annular cascades.The results show that the positive rotation of hub wall would reduce blockage in cascades.The mass flow rate of cascades is improved when the rotation speed increase.The 3-D hub corner separation can be removed by the rotation speed increasing.The detail analysis results show that the increasing of the leakage mass flow rate is the key reason for the corner separation removed.
- compressor stator /
- hub rotation /
- corner separation /
- leakage flow /
- secondary flow

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参考文献(15)

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