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Energies 2016, 9(4), 296; doi:10.3390/en9040296

Aerodynamic Analysis and Three-Dimensional Redesign of a Multi-Stage Axial Flow Compressor

1
Key Laboratory for Thermal Science and Power Engineering of Ministry of Education, Department of Thermal Engineering, Tsinghua University, Beijing 100084, China
2
Collaborative Innovation Center of Advanced Aero-Engine, Beijing 100191, China
3
Shenyang Engine Design and Research Institute (SEDRI), Shenyang 110000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Paolo Mercorelli
Received: 14 September 2015 / Revised: 29 March 2016 / Accepted: 11 April 2016 / Published: 16 April 2016

Abstract

This paper describes the introduction of three-dimension (3-D) blade designs into a 5-stage axial compressor with multi-stage computational fluid dynamic (CFD) methods. Prior to a redesign, a validation study is conducted for the overall performance and flow details based on full-scale test data, proving that the multi-stage CFD applied is a relatively reliable tool for the analysis of the follow-up redesign. Furthermore, at the near stall point, the aerodynamic analysis demonstrates that significant separation exists in the last stator, leading to the aerodynamic redesign, which is the focus of the last stator. Multi-stage CFD methods are applied throughout the three-dimensional redesign process for the last stator to explore their aerodynamic improvement potential. An unconventional asymmetric bow configuration incorporated with leading edge re-camber and re-solidity is employed to reduce the high loss region dominated by the mainstream. The final redesigned version produces a 13% increase in the stall margin while maintaining the efficiency at the design point. View Full-Text
Keywords: axial compressor; multi-stage; stator; bow; re-camber; re-solidity axial compressor; multi-stage; stator; bow; re-camber; re-solidity
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ning, T.; Gu, C.-W.; Ni, W.-D.; Li, X.-T.; Liu, T.-Q. Aerodynamic Analysis and Three-Dimensional Redesign of a Multi-Stage Axial Flow Compressor. Energies 2016, 9, 296.

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