Influence of Combined Casing Treatment on Flow Characteristics of Transonic Compressor

doi:10.7652/xjtuxb202004021

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Influence of Combined Casing Treatment on Flow Characteristics of Transonic Compressor

更新时间：2025-07-09

- Influence of Combined Casing Treatment on Flow Characteristics of Transonic Compressor
- Vol. 54, Issue 4, Pages: 173-178(2020)
- 作者机构：
  
  西安交通大学化学工程与技术学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202004021
  CLC： V235.12
- Online First：10 April 2020，
  
  Published：2020
- 稿件说明：
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Influence of Combined Casing Treatment on Flow Characteristics of Transonic Compressor[J]. 2020, 54(4): 173-178.
DOI：

Influence of Combined Casing Treatment on Flow Characteristics of Transonic Compressor[J]. 2020, 54(4): 173-178. DOI： 10.7652/xjtuxb202004021.

摘要

针对当前单一流动控制技术在压气机优化方面存在影响范围不大、性能提升有限的不足

提出了一种轴向倾斜缝和抽吸槽相结合的组合机匣处理结构

采用定常数值模拟研究了两种流动控制技术的结合对跨音压气机流场特性及性能的影响。模拟结果表明:应用该组合机匣处理结构后

转子在峰值效率下降2.5%的前提下使失速裕度提高了5.52%

明显改善了转子的性能; 组合机匣处理除了能同时改善叶顶和端壁的流动之外

两种结构的复合影响使激波强度降低、流体分离减弱

低速范围明显减小; 尽管两种结构的相互作用能为低能流体提供能量

但射流与主流流动发生的掺混带来了一定的掺混损失

增加了主流的切向动量及二次流损失

引起转子效率降低。

Abstract

To expand the influence range of flow control technology and further improve the performance of rotor

a combined casing structure with axial skewed slots and suction slots is presented

and the influences of the combination of two flow control technologies on the flow field characteristics and performance of the transonic compressor are investigated numerically by steady state simulation. The results show that the stall margin is increased by 5.52% while the peak efficiency reduces by 2.5%

which indicates the significantly improved performance of the rotor. In addition

the flows at both blade tip and end wall are ameliorated; the combined effect of the two structures weakens shock wave intensity and fluid separation

and reduces the area of low velocity region. Although the interaction between the two structures can provide energy for the low-energy fluid

the mixing of the jet flow and the mainstream flow causes a certain mixing loss and increases the tangential momentum and second

关键词

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references

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