气动

Design of a Sector Cascade Applied in the Middle Stage of a Compressor Test Rig

  • WANG Jiayu ,
  • HU Jun ,
  • JIANG Chao ,
  • LI Jun
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  • 1. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    2. Jiangsu Province Key Laboratory of Aerospace Power System, Nanjing 210016, China

网络出版日期: 2023-11-30

基金资助

The research is supported by the National Science and Technology Major Project (2017-II-0004-0017).

版权

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2020

Design of a Sector Cascade Applied in the Middle Stage of a Compressor Test Rig

  • WANG Jiayu ,
  • HU Jun ,
  • JIANG Chao ,
  • LI Jun
Expand
  • 1. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
    2. Jiangsu Province Key Laboratory of Aerospace Power System, Nanjing 210016, China

Online published: 2023-11-30

Supported by

The research is supported by the National Science and Technology Major Project (2017-II-0004-0017).

Copyright

Science Press, Institute of Engineering Thermophysics, CAS and Springer-Verlag GmbH Germany, part of Springer Nature 2020

摘要

为了便于装配和节省实验成本,设计了一种针对压气机中间级的扇形段实验平台。新的设计思想首先在扇形段实验台进行实验研究以验证新设计思想的效果,从而降低了新设计思想直接应用于全环压气机中的风险。该扇形段实验平台是一个插拔组件,插入中间级后组合成全环静子叶排,扇形段组件包含一组通过3D打印制造的可更换的机匣端壁和叶片。与传统的平面叶栅实验相比,扇形段实验台可以创造出更接近发动机实际工作状态的环境。对原型静子在设计点的流场进行了详细的测试,发现在叶尖区域存在一定的流动缺陷,然后提出三种可能改善该流动缺陷的设计方案,并通过实验研究哪一种设计方案能够有效改善该流动缺陷。机匣端壁造型思想是最有效的改善静子叶尖流动缺陷的方法,它能显著抑制静子尖部分离,降低总压损失系数。通过实验测试表明,扇形段实验平台的设计是成功的,具有广阔的应用前景,可用于进一步研究中间级的流动机理。

本文引用格式

WANG Jiayu , HU Jun , JIANG Chao , LI Jun . Design of a Sector Cascade Applied in the Middle Stage of a Compressor Test Rig[J]. 热科学学报, 2022 , 31(2) : 485 -494 . DOI: 10.1007/s11630-020-1337-8

Abstract

A compressor test platform was designed in the purpose of easy assembly and cost-saving tests. New design concepts were firstly used on the test platform and iterative revisions were conducted to verify the effects, which decrease the risk of applying to the full annulus directly. The platform was a sector cascade that can be inserted into an otherwise full stator annulus, with a set of exchangeable endwall casing and blades manufactured by 3-D printing. The platform can create an operating condition which is closer to engine-realistic flow conditions than traditional cascade tests. The flow field of the prototype stator was tested in detail at the operating point and showed some flow defects in the tip region, and then three design plans were conducted to experimentally investigate which design concept could improve the blade tip flow. The concept of casing endwall profiling was the most effective one which markedly depressed the separation of the tip region and decreased the total pressure loss coefficient. The test results show that the design of the test platform was successful and promising, which could be used to conduct more researches on the flow mechanism of the middle stage.

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