Aerothermodynamics

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

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

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.

Cite this article

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

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