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TECHNICAL PAPERS

Unsteady Boundary Layer Development Due to Wake Passing Effects on a Highly Loaded Linear Compressor Cascade

[+] Author and Article Information
Lothar Hilgenfeld, Michael Pfitzner

Institut fuer Strahlantriebe, Universitaet der Bundswehr Muenchen, Werner-Heisenberg-Weg 39, 85579 Neubiberg, Germany

J. Turbomach 126(4), 493-500 (Dec 29, 2004) (8 pages) doi:10.1115/1.1791290 History: Received October 01, 2003; Revised March 01, 2004; Online December 29, 2004
Copyright © 2004 by ASME
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References

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Pfeil,  H., Herbst,  R., and Schröder,  T., 1983, “Investigation of the Laminar-Turbulent Transition of Boundary Layers Disturbed by Wakes,” ASME J. Eng. Power, 105, pp. 130–137.
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Halstead,  D. E., Wisler,  D. C., Okiishi,  T. H., Walker,  G. J., Hodson,  H. P., and Shin,  H.-W., 1997, “Boundary Layer Development in Axial Compressors and Turbines: Part 1–4,” ASME J. Turbomach., 119, pp. 114–127, pp. 426–444, pp. 225–237, pp. 128–139.
Walker,  G. J., Hughes,  J. D., and Solomon,  W. J., 1999, “Periodic Transition On An Axial Compressor Stator: Incidence and Clocking Effects: Part I-Experimental Data,” ASME J. Turbomach., 121, pp. 398–407.
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Pfeil,  H., and Eifler,  J., 1976, “Turbulenzverhaeltnisse Hinter Rotierenden Zylindergittern,” Forschung Ingenieurwesen,42, pp. 27–32.
Sturm, W., and Fottner, L., 1985, “The High-Speed Cascade Wind Tunnel of the German Armed Forces University Munich,” 8th Symp. on Meas. Techn. for Transonic and Supersonic Flows in Cascades and Turbomachines, Genoa.
Wolff,  S., Brunner,  S., and Fottner,  L., 2000, “The Use of Hot-Wire Anemometry to Investigate Unsteady Wake-Induced Boundary-Layer Development on a High-Lift LP Turbine Cascade,” ASME J. Turbomach., 122, pp. 644–650.
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Figures

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Compressor cascade V103-220
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Wake generator (EIZ) with installed compressor cascade
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High speed cascade wind tunnel
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Unsteady inflow conditions; design inlet conditions
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Isentropic profile Mach number distribution at design inlet conditions
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Contour of unsteady isentropic profile Mach number
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Unsteady pressure signals at xax/lax=0.65
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Ensemble averaged pressure traces, bar pitch=120 mm, bar speed=40 m/s (tbar/t=1,Sr1=0.44)
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Ensemble averaged pressure traces, bar speed=20 m/s
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Ensemble averaged pressure traces, bar pitch=120 mm (tbar/t=1), bar speed=20 m/s
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Ensemble averaged RMS values, Ma1=0.67,Re1=450,000,tbar=40 mm,ubar=20 m/s(tbar/t=1/3,Sr1=0.66)
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Ensemble averaged values at single sensor location xax/lax=0.40,Ma1=0.67,Re1=450,000,tbar=40 mm,ubar=20 m/s(tbar/t=1/3,Sr1=0.66)
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Ensemble averaged QWSS values, Ma1=0.67,Re1=450,000,tbar=40 mm,ubar=20 m/s(tbar/t=1/3,Sr1=0.66)
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Ensemble averaged RMS values, Ma1=0.67,Re1=450,000,tbar=120 mm,ubar=20 m/s(tbar/t=1,Sr1=0.22)
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Ensemble averaged RMS values, Ma1=0.67,Re1=700,000,tbar=120 mm,ubar=20 m/s(tbar/t=1,Sr1=0.22)
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Ensemble averaged velocity, Ma1=0.67,Re1=450,000,tbar=40 mm,ubar=20 m/s(tbar/t=1/3,Sr1=0.66)
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Ensemble averaged velocity, Ma1=0.67,Re1=450,000,tbar=120 mm,ubar=20 m/s(tbar/t=1,Sr1=0.22)
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Momentum thickness and shape factor at xax/lax=0.97,Ma1=0.67,Re1=450,000,tbar=40 mm,ubar=20 m/s(tbar/t=1/3,Sr1=0.66)
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Momentum thickness and shape factor at xax/lax=0.75,Ma1=0.67,Re1=450,000,tbar=120 mm,ubar=20 m/s(tbar/t=1,Sr1=0.22)
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Ensemble averaged shape factors, Ma1=0.67,Re1=450,000,tbar=40 mm,ubar=20 m/s(tbar/t=1/3,Sr1=0.44)

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