The main purpose of this paper is to analyze the characteristics of the flow field in fan rotor. Nowadays the twisted and swept fan is the representative work of the forefront of aerospace engines. The tip clearance flow field can have a large impact on fan rotor performance. This article describes and uses the throttle method to obtain near stall condition. Near stall condition value simulation of the transonic fan rotor was carried out by CFX. The Proper Orthogonal Decomposition method was applied to the tip flow-field analysis. The main structure of the flow field can be distinguished by Proper Orthogonal Decomposition method. Then the flow structure is sorted according to energy. Disturbing fine flow structures can also be captured. This provides a comparative reference for flow field visualization. It also provides important data for the design of the fan.

中文翻译：

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正确正交分解法在轴流高旁流风扇非定常流场分析中的应用

本文的主要目的是分析风机转子的流场特性。如今，螺旋风和掠过的风扇是航空发动机最前沿的代表。尖端间隙流场会对风扇转子的性能产生很大影响。本文介绍并使用油门方法获得接近失速的条件。通过CFX对跨音速风扇转子的接近失速条件值进行了仿真。适当的正交分解方法应用于尖端流场分析。流场的主要结构可以通过适当的正交分解法来区分。然后根据能量对流动结构进行分类。扰动的细流结构也可以被捕获。这为流场可视化提供了比较参考。