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Aerodynamic analysis of nonuniform trailing edge blowing

Dong Liang (Aero Engine (Group) Corporation of China, Beijing, China)
Wenjie Wang (Beihang University, Beijing, China)
Peter J. Thomas (University of Warwick, Coventry, UK)

Aircraft Engineering and Aerospace Technology

ISSN: 0002-2667

Article publication date: 18 October 2018

Issue publication date: 30 January 2019

118

Abstract

Purpose

Numerical and experimental results for different oncoming base-flow conditions indicate that nonuniform trailing edge blowing (NTEB) can expand the performance range of compressors and reduce the thrust on the rotor, while the efficiency of the compressor can be improved by more than 2 per cent.

Design/methodology/approach

Relevant aerodynamic parameters, such as total pressure, ratio of efficiency and axial thrust, are calculated and analyzed under conditions with and without NTEB. Measurements are performed downstream of two adjacent stator blades, at seven equidistantly spaced reference locations. The experimental measurement of the interstage flow field used a dynamic four-hole probe with phase lock technique.

Findings

An axial low-speed single-stage compressor was established with flow field measurement system and nonuniform blowing system. NTEB was studied by means of numerical simulations and experiments, and it is found that the efficiency of the tested compressor can be improved by more than 2 per cent.

Originality/value

Unlike most of the previous research studies which mainly focused on the rotor/stator interaction and trailing edge uniform blowing, the research results summarized in the current paper on the stator/rotor interaction used inlet guide vanes for steady and unsteady calculations. An active control of the interstage flow field in a low-speed compressor was used to widen the working range and improve the performance of the compressor.

Keywords

Acknowledgements

This paper is supported by the Aeronautical Science Foundation of China (No. 2015ZBN3008), the China Postdoctoral Science Foundation (No. 2016M591046) and the China Scholarship Council (No. 201809110025). The authors are very grateful to the reviewers and the editor for their constructive comments and valuable suggestions to improve the presentation of the paper.

Citation

Liang, D., Wang, W. and Thomas, P.J. (2020), "Aerodynamic analysis of nonuniform trailing edge blowing", Aircraft Engineering and Aerospace Technology, Vol. 91 No. 1, pp. 134-144. https://doi.org/10.1108/AEAT-04-2018-0115

Publisher

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Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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