A detailed LDA experimental study is reported on the effect of variations in feed annulus conditions on port flow jet characteristics. The data are relevant to primary and dilution jet flows as found in gas-turbine combustor liners. Alteration of jet velocity ratios and associated bleed flows past the jet ports for a typical annulus height/port diameter configuration was observed to produce significant variations in separation regions in the annulus, distortions in downstream annulus profiles, and jet exit conditions. Profiles of jet exit velocity, flow angle, and turbulent kinetic energy distribution have been provided which should prove invaluable as boundary conditions for related CFD studies. For the first time the influence of swirl in the approach annulus was examined, at a level consistent with residual swirl passing down the annulus from compressor exit conditions. Noticeable deviations in jet characteristics were again observed, reducing jet entry angles by some 20 deg over the rear half of the port.
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June 2001
Technical Papers
LDA Measurements of Feed Annulus Effects on Combustor Liner Port Flows1
Adrian Spencer,
Adrian Spencer
Department of Aeronautical and Automotive Engineering, Loughborough University, Leicestershire, LE11 3TU United Kingdom
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James J. McGuirk
James J. McGuirk
Department of Aeronautical and Automotive Engineering, Loughborough University, Leicestershire, LE11 3TU United Kingdom
Search for other works by this author on:
Adrian Spencer
Department of Aeronautical and Automotive Engineering, Loughborough University, Leicestershire, LE11 3TU United Kingdom
James J. McGuirk
Department of Aeronautical and Automotive Engineering, Loughborough University, Leicestershire, LE11 3TU United Kingdom
Contributed by the Fluids Engineering Division for publication in the JOURNAL OF FLUIDS ENGINEERING. Manuscript received by the Fluids Engineering Division January 28, 2000; revised manuscript received December 22, 2000. Associate Editor: P. W. Bearman.
J. Fluids Eng. Jun 2001, 123(2): 219-227 (9 pages)
Published Online: December 22, 2000
Article history
Received:
January 28, 2000
Revised:
December 22, 2000
Citation
Spencer , A., and McGuirk, J. J. (December 22, 2000). "LDA Measurements of Feed Annulus Effects on Combustor Liner Port Flows." ASME. J. Fluids Eng. June 2001; 123(2): 219–227. https://doi.org/10.1115/1.1365932
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