The aerodynamics of circumferential casing-groove in a transonic compressor

Mustaffa, Ahmad Fikri and Kanjirakkad, Vasudevan (2021) The aerodynamics of circumferential casing-groove in a transonic compressor. AIAA Propulsion and Energy 2021 Forum, Virtual (Online), 9–11 August 2021. Published in: Proceedings of the AIAA Propulsion and Energy 2021 Forum. American Institute of Aeronautics and Astronautics ISBN 9781624106118

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Abstract

This paper presents the results from a numerical investigation into the near casing flow development in a transonic axial compressor rotor. The compressor geometry selected is known to undergo a spike type stall when the mass flow through it is reduced below a critical limit. The paper assesses the development of tip leakage flow and its interaction with the flow within a single circumferential casing groove using a steady Reynolds Averaged Navier Stokes solver. Casing grooves are known to improve stall margin in tip critical compressors. The results from the present study show a detailed picture of the above interaction and the nature of the flow within the groove both of which result in an improvement in the stall margin of the compressor. The negative axial momentum associated with the tip leakage flow is shown to be a major factor affecting the performance of the groove and eventually that of the compressor.

Item Type: Conference Proceedings
Keywords: Transonic Axial Compressor, Stall Margin Improvement, Circumferential casing groove
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Thermo-Fluid Mechanics Research Centre
SWORD Depositor: Mx Elements Account
Depositing User: Mx Elements Account
Date Deposited: 12 Aug 2021 07:52
Last Modified: 26 Aug 2021 10:21
URI: http://sro.sussex.ac.uk/id/eprint/101086
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