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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 2017, Vol. 38 ›› Issue (9): 520949-520949.doi: 10.7527/S1000-6893.2017.620949

• Special Column of Internal Flow and Heat Transfer Technology Development in Aero-engine • Previous Articles     Next Articles

A review of studies on pipe diffuser of centrifugal compressor

HAN Ge1, YANG Chengwu1, LI Ziliang1,2, ZHAO Shengfeng1,2, LU Xin'gen1,2   

  1. 1. Key Laboratory of Light-duty Gas-turbine, Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;
    2. University of Chinese Academy of Sciences, Beijing 100190, China
  • Received:2016-11-17 Revised:2017-06-15 Online:2017-09-15 Published:2017-06-26
  • Supported by:

    National Natural Science Foundation of China (51606187);Defense Industry Technology Development Program (B1320133025)

Abstract:

It is a great challenge to design a diffuser with both high performance and compact size. The compact and high performance design of diffusers has become the main technical limitation for the application of diffusers on high pressure ratio centrifugal compressors. Using pipe diffusers are recognized as an effective method to solve the tough diffuser design problem for high pressure ratio centrifugal compressors. Pipe diffusers have been used for advanced overseas small and medium jet engines. The performance of the centrifugal compressor has been improved evidently by using pipe diffusers. This review mainly introduces the research development of pipe diffusers home and abroad in two perspectives:first, the influences of design parameters of the pipe diffuser on the stage performance of the centrifugal compressor; second, the complex mechanism of the internal flow in pipe diffusers. The influence of the mechanism of internal flow in pipe diffuser on the performance of the centrifugal compressor is discussed, and some recommendations are made for the development of future research on pipe diffusers.

Key words: centrifugal compressor, pipe diffuser, compressor performance, internal flow, unsteady flow

CLC Number: