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Experimental study of the unsteady aerodynamics the compressor-combustor interface of a lean burn combustion system

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conference contribution
posted on 2015-10-19, 14:44 authored by Duncan WalkerDuncan Walker, Jonathan F. Carrotte, Graham PeacockGraham Peacock, Adrian SpencerAdrian Spencer, Jim McGuirk
To meet the technological challenges of lean burn, low emission combustion knowledge based design methodologies must be developed. This paper presents back-to-back, time-averaged and time-resolved aerodynamic measurements made using a unique state-of-the-art fully annular isothermal test facility incorporating a 1/2 stage axial compressor and a typical lean burn, low emission combustor geometry and either a clean or a strutted OGV/pre-diffuser system. The various measurement techniques employed (miniature five-hole probe, hot-wire anemometry, PIV) show a good level of agreement highlighting both the effect of including pre-diffuser struts and the notable unsteadiness present in the OGV/pre-diffuser system. The data presented provide the first evidence of the highly unsteady nature of the flow issuing from a pre-diffuser and potentially influencing the downstream external combustor aerodynamics.

Funding

This work was undertaken as part of the four year KIAI project. This European initiative started in May 2009 and was financed by the European Community's Seventh Framework Programme under Grant Agreement No. ACP8-GA-2009-234009FP7

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference

Citation

WALKER, A.D. ...et al., 2013. Experimental study of the unsteady aerodynamics the compressor-combustor interface of a lean burn combustion system. IN: 49th AIAA/ASME/SAE/ASEE Joint Propulsion Conference, San Jose, California, 14-17th July. http://dx.doi.org/10.2514/6.2013-3603

Publisher

Copyright © 2013 by A. Duncan Walker , Jonathon F. Carrotte , Graham L. Peacock , Adrian Spencer and James J. McGuirk. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission

Version

  • AM (Accepted Manuscript)

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

2013

Notes

This is a conference paper.

ISBN

9781624102226

Language

  • en

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