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Numerical investigation of VSVs mal-schedule effects in a three-stage axial compressor

conference contribution
posted on 05.09.2017, 11:43 by Yanling Li, Abdulnaser Sayma
Variable Stator Vanes (VSVs) are commonly used in multi-stage axial compressors for stage matching at part load operations and during start up. Improper VSVs settings or malfunction of the controlling actuator system can lead to compressor instabilities including rotating stall and surge. It is important to be able to predict the aerodynamic behaviour of compressors in such events to either produce tolerant designs or incorporate diagnosis and recovery systems. This paper presents a numerical study of a compressor operating near the stall boundary for a mal-scheduled VSVs case. A high-speed three-stage axial compressor with Inlet Guide Vanes (IGV) is used in the investigation because of its relative simplicity and availability of geometry and aerodynamic data. A 3D RANS viscous unsteady time-accurate flow solver was used to perform the full annulus simulation with a downstream variable nozzle to control outflow boundary conditions. The unstructured mesh contained about 25 million grid points and the simulation was performed on a high performance computing cluster for many engine rotations. Rotating stall with one single cell covering several passages in all three rotors was predicted which propagated at approximately half of the shaft speed. Full analysis of the flow features is presented in the paper.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

ASME Turbo Expo 2014: Turbine Technical Conference and Exposition

Volume

Volume 2D: Turbomachinery

Pages

? - ? (10)

Citation

LI, Y. and SAYMA, A., 2012. Numerical investigation of VSVs mal-schedule effects in a three-stage axial compressor. IN: Proceedings of 2014 ASME Turbine Technical Conference and Exposition (Turbo Expo 2014), Düsseldorf, Germany, 16-20 June 2014. Volume 2D. Turbomachinery, pp.2427-2437.

Publisher

© ASME

Version

VoR (Version of Record)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Publication date

2014

ISBN

9780791845639;079184563X

Language

en

Location

Düsseldorf

Exports

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Keywords

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