0
TECHNICAL PAPERS

Natural Transition Phenomena on an Axial Compressor Blade

[+] Author and Article Information
J. D. Hughes, G. J. Walker

School of Engineering, University of Tasmania, Hobart, Australia

J. Turbomach 123(2), 392-401 (Feb 01, 2000) (10 pages) doi:10.1115/1.1351816 History: Received February 01, 2000
Copyright © 2001 by ASME
Your Session has timed out. Please sign back in to continue.

References

Figures

Grahic Jump Location
Cross section of compressor blading at midblade height, showing typical instantaneous wake dispersion: SS=suction side, PS=pressure side, a=circumferential offset of stator leading edge from center of IGV wake street.
Grahic Jump Location
Variation of stator blade surface velocity distribution with loading at midblade height: Reref=120,000
Grahic Jump Location
Temporal variation of ensemble-averaged turbulence level 〈Tu〉 (percent) on stator stagnation streamline at inflow measurement plane 55.7 percent axial distance upstream of stator leading edge; variation with stator loading and IGV clocking
Grahic Jump Location
Comparison of predicted T–S wave frequency and measured instability wave packet frequency
Grahic Jump Location
Top: quasi-wall shear stress record from a hot-film gage located at s*=0.3108 on the stator suction surface for the medium loading case. High-pass filtered signal amplified five times and superimposed. Darker shaded regions indicate turbulent flow; lighter shaded regions indicate instability wave occurrence. Bottom: modulus of the Morlet wavelet transform for the quasi-wall shear stress record. Hatching indicates frequency range under consideration by the detection algorithm.
Grahic Jump Location
Simultaneous quasi-wall shear stress records from five gages spanning s*=0.1825–0.4390 on the stator suction surface. High-pass filtered traces amplified five times and overlaid on each raw signal. Darker shaded regions indicate turbulent flow; lighter shaded regions indicated instability wave occurrence. Individual events from Fig. 5 are highlighted by dashed lines.
Grahic Jump Location
Ensemble-averaged intermittency (shading) and probability of instability wave occurrence (line contours). Dashed line indicates 10 percent probability contour for relaxing nonturbulent flow: (a) IGV wake street on rotor (a/S=0.00); (b) IGV wake street in passage (a/S=0.50)

Tables

Errata

Discussions

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In