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TECHNICAL PAPERS

Study of Wake-Blade Interactions in a Transonic Compressor Using Flow Visualization and DPIV

[+] Author and Article Information
J. Estevadeordal, S. Gogineni, L. Goss

Innovative Scientific Solutions, Inc., 2766 Indian Ripple Rd., Dayton, OH 45440

W. Copenhaver, S. Gorrell

Air Force Research Laboratory, AFRL/PRTF, Bldg. 18, Wright-Patterson Air Force Base, OH 45433

J. Fluids Eng 124(1), 166-175 (Aug 24, 2001) (10 pages) doi:10.1115/1.1429638 History: Received January 29, 2001; Revised August 24, 2001
Copyright © 2002 by ASME
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References

Calvert,  W. J., 1994, “Detailed Flow Measurement and Predictions for a Three-Stage Transonic Fan,” ASME J. Turbomach., 116, No. 2, pp. 298–305.
Strazisar,  A. J., 1985, “Investigation of Flow Phenomena in a Transonic Fan Rotor Using Laser Anemometry,” ASME J. Eng. Gas Turbines Power, 107, No. 2, pp. 427–435.
Balzani,  N., Scarano,  F., Riethmuller,  M. L., and Breugelmans,  F. A. E., 2000, “Experimental Investigation of the Blade-to-Blade Flow in a Compressor Rotor by Digital Particle Image Velocimetry,” ASME J. Turbomach., 122, pp. 743–750.
Estevadeordal, J., Gogineni, S., Goss, L., Copenhaver, W., and Gorrell, S., 2000, “Study of Flow-Field Interactions in a Transonic Compressor Using DPIV,” 38th AIAA Aerospace Sciences Meeting and Exhibit, January 10-13, Reno, NV, AIAA 00-0378.
Sanders, A. J., Papalia, J., and Fleeter, S., 1999, “A PIV Investigation of Rotor-IGV Interactions in a Transonic Axial-Flow Compressor,” 35th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, June 20-23, Los Angeles, AIAA-99-2674.
Wernet,  M. P., 2000, “Development of Digital Particle Imaging Velocimetry for Use in Turbomachinery,” Exp. Fluids, 28, pp. 97–115.
Estevadeordal,  J., Gogineni,  S., Copenhaver,  W., Bloch,  G., and Brendel,  M., 2000, “Flow Field in a Low-Speed Axial Fan: a DPIV Investigation,” Exp. Therm. Fluid Sci., 23, pp. 11–21.
Law,  C. H., and Wadia,  A. R., 1993, “Low Aspect Ratio Transonic Rotors: Part 1 - Baseline Design and Performance,” ASME J. Turbomach., 115, p. 218.
Gorrell,  S., Copenhaver,  W., and Chriss,  R., 2001, “Upstream Wake Influences on the Measured Performance of a Transonic Compressor Stage,” J. Propul. Power, 17, No. 1, pp. 43–48.
Creason, T., and Baghdadi, S., 1988, “Design and Test of a Low Aspect Ratio Fan Stage,” AIAA 88-2816.
Law, C.H., and Wennerstrom, A. J., 1989, “Two Axial Compressor Designs for a Stage Matching Investigation,” AFWAL-TR-89-2005, Air Force Wright Aeronautical Laboratories, Wright-Patterson AFB, OH.
Copenhaver, W., Gorrell, S., and Chriss, R., 1999, “Transonic Compressor Blade-Row Interactions: Spacing Influences on Flow Swallowing and Performance,” Fourteenth International Symposium on Air Breathing Engines, Florence, Italy (ISABE 7030).
Koch, P, Probasco, D., Wolff, M., Copenhaver, W., and Chriss, R., 1999, “Transonic Compressor Influences on Upstream Surface Pressures with Axial Spacing,” International Gas Turbine & Aeroengine Congress & Exhibition, Indianapolis, IN, June 7-10 (ASME Paper No. 99-GT-384).
Sondak,  D. L., and Dorney,  D. J., 1999, “Simulation of Vortex Shedding in a Turbine Stage,” ASME J. Turbomach., 121, No. 3, pp. 428–435.
Coleman, H. W., and Steele, W. G., 1989, Experimentation and Uncertainty Analysis for Engineers, J. Wiley, New York.
Estevadeordal,  J., and Kleis,  S. J., 1999, “High-Resolution Measurements of Two-Dimensional Instabilities and Turbulence Transition in Plane Mixing Layers,” Exp. Fluids, 27, No. 4, pp. 378–390.

Figures

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Flow path of the 2000-hp Compressor Aerodynamic Research Laboratory facility (CARL) and locations for global and local seeding
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Cross section of Stage-Matching-Investigation (SMI) rig in general configuration
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WG meridional profile with cross sections (flow from left to right)
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Stage and rotor pressure ratios for 40 WG configurations
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Detail of DPIV system and rig (a); prototype of WG and laser-sheet delivery system (b); laser-sheet delivery and receiving window (c)
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Schematics of optical path (a) and flow features at scale (b) with DPIV delivery and receiving optics
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Blade, WGs, and laser-sheet spanwise locations for 40-WG configuration. Thinner WG line corresponds to WG centered at viewing window (marked by two small lines), and thicker portions of laser sheets (green) denote DPIV image location. Blade-to-blade period is 140 μs. Delays relevant to paper are shown.
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Flow visualization for half period of blade passage in front of the WG at 20-μs intervals for 24-WG configuration at 75% span (a,c) and 90% span (b,d) for close-spacing (a,b) and mid-spacing (c,d). Scale is 1:1, except for b (2:1). Percentages at top and bottom of last frames of each set indicate span of laser sheet. Letter “a” above vortices indicates their location and convection.
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Flow visualization of half period of blade passage through WG in 20-μsec intervals (except last frame) for 40-WG, close-spacing (a,b) and mid-spacing (c,d) at 75% (a,c) and 90% span (b,d). Scales are 1:1 (a,b) and 3:4 (c,d). Percentages at the top and bottom of the last frames of each set indicate span of laser sheet.
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DPIV instantaneous velocity fields for blade passage at 20-μs intervals for 24-WG and mid-spacing configuration at 75% (a) and 90% (b) spans. More detailed color maps are available in the online version.
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DPIV instantaneous velocity fields for blade passage at 20-μs intervals for 40-WG and close-spacing configuration at 75% (a) and 90% (b) spans. More detailed color maps are available in the online version.
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Streamtraces overlayed on vorticity (μs−1) for three blade delays 10 μs apart during wake-blade interaction for 40 WG, close spacing, and 90% span. More detailed color maps are available in the online version.
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Average quantities. Mean (a) and median (b) over 50 realizations at 75% span; mean (c) and standard deviation (d) over 150 realizations at 90% span. Both for close spacing, 40 WG, and blade delay of 120 μs. Five velocity profiles are overlayed on (c) and (d). More detailed color maps are available in the online version.

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