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TECHNICAL PAPERS: Gas Turbines: Heat Transfer

Experiment on Gas Ingestion Through Axial-Flow Turbine Rim Seals

[+] Author and Article Information
R. P. Roy, J. Feng, D. Narzary

Department of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287-6106

R. E. Paolillo

Pratt & Whitney, East Hartford, CT 06108

J. Eng. Gas Turbines Power 127(3), 573-582 (Jun 24, 2005) (10 pages) doi:10.1115/1.1850499 History: Received October 01, 2003; Revised March 01, 2004; Online June 24, 2005
Copyright © 2005 by ASME
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References

Owen, J. M., and Rogers, R. H., 1989, Flow and Heat Transfer in Rotating-Disc Systems. Volume 1—Rotor–Stator Systems, Research Studies Press Ltd, Taunton, Somerset, England.
Dring,  R. P., Joslyn,  H. D., Hardin,  L. W., and Wagner,  J. H., 1982, “Turbine Rotor–Stator Interaction,” ASME J. Eng. Power, 104, pp. 729–742.
Green,  T., and Turner,  A. B., 1994, “Ingestion Into the Upstream Wheelspace of an Axial Turbine Stage,” ASME J. Turbomach., 116, pp. 327–332.
Johnson, B. V., Mack, G. J., Paolillo, R. E., and Daniels, W. A., 1994, “Turbine Rim Seal Gas Path Flow Ingestion Mechanisms,” AIAA Paper 94-2703.
Bohn, D., Rudzinski, B., Surken, N., and Gartner, W., 1999, “Influence of Rim Seal Geometry on Hot Gas Ingestion Into the Upstream Cavity of an Axial Turbine Stage,” ASME Paper 99-GT-248.
Bohn, D., Rüdzinski, B., Sürken, N., and Gärtner, W., 2000, “Experimental and Numerical Investigation of the Influence of Rotor Blades on Hot Gas Ingestion Into the Upstream Cavity of an Axial Turbine Stage,” ASME Paper 2000-GT-284.
Feiereisen, J. M., Paolillo, R. E., and Wagner, J., 2000, “UTRC Turbine Rim Seal Ingestion and Platform Cooling Experiments,” AIAA Paper 2000-3371.
Gallier, K. D., Lawless, P. B., and Fleeter, S., 2000, “Investigation of Seal Purge Flow Effects on the Hub Flow Field in a Turbine Stage Using Particle Image Velocimetry,” AIAA Paper 2000-3370.
Gentilhomme, O., Hills, N. J., Chew, J. W., and Turner, A. B., 2002, “Measurement and Analysis of Ingestion Through a Turbine Rim Seal,” ASME Paper GT-2002-30481.
Cao, C., Chew, J. W., Millington, P. R., and Hogg, S. I., 2003, “Interaction of Rim Seal and Annulus Flows in an Axial Flow Turbine,” ASME Paper GT-2003-38368.
Roy, R. P., Devasenathipathy, S., Xu, G., and Zhao, Y., 1999, “A Study of the Flow Field in a Model Rotor–Stator Disk Cavity,” ASME Paper 99-GT-246.
Roy, R. P., Xu, G., and Feng, J., 2000, “Study of Main-Stream Gas Ingestion in a Rotor–Stator Disk Cavity,” AIAA Paper 2000-3372.
Roy, R. P., Xu, G., Feng, J., and Kang, S., 2001, “Pressure Field and Main Stream Gas Ingestion in Rotor Stator Disk Cavity,” ASME Paper 2001-GT-564.
Suryavamshi,  N., Lakshminarayana,  B., Prato,  J., and Fagan,  J. R., 1997, “Unsteady Total Pressure Field Downstream of an Embedded Stator in a Multistage Axial Flow Compressor,” ASME J. Fluids Eng., 119, pp. 985–994.
Roy,  R. P., Xu,  G., and Feng,  J., 2001, “A Study of Convective Heat Transfer in a Model Rotor–Stator Disk Cavity,” ASME J. Turbomach., 123, pp. 621–632.
Pasinato,  H., Squires,  K. D., and Roy,  R. P., 2004, “Assessment of Reynolds-Averaged Turbulence Models for Prediction of the Flow and Heat Transfer in an Inlet Vane-Endwall Passage,” ASME J. Fluids Eng., 126, pp. 305–315.

Figures

Grahic Jump Location
Schematic diagram—Model 1 (C: tracer gas concentration tap, P: time-average static pressure tap, UP: unsteady pressure tap); all dimensions in mm
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Schematic diagram—Model 2 (C: tracer gas concentration tap, P: time-average static pressure tap, UP: unsteady pressure tap); all dimensions in mm
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Circumferential distributions of time-average static pressure at the outer shroud, stator disk rim seal, and stator disk near its rim at Reϕ=7.32×105,Revax=1.12×105,cw=1574—for Model 1
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Circumferential distributions of time-average static pressure at the outer shroud, stator disk rim seal, and stator disk near its rim at Reϕ=7.74×105,Revax=8.78×104,cw=1504—for Model 2
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Time-average static pressure variation amplitude coefficient at the main gas path outer shroud and stator rim seal—Reϕ=7.32×105,Revax=1.12×105,cw=1574—for Model 1; Reϕ=7.74×105,Revax=8.78×104,cw=1504—for Model 2
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Ensemble-average unsteady static pressure at the outer shroud, stator rim seal, and stator disk near its rim at Reϕ=7.32×105,Revax=1.12×105,cw=1574—one revolution—for Model 1
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Blade-periodic static pressure at the outer shroud, stator rim seal, and stator disk near its rim at Reϕ=7.32×105,Revax=1.12×105,cw=1574—three blade passages—for Model 1
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Effect of purge airflow rate on blade-periodic static pressure at the outer shroud (UP #1, UP #4, UP #5) at Reϕ=7.32×105,Revax=1.12×105—three blade passages—for Model 1
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Effect of main airflow rate on blade-periodic static pressure at the outer shroud (UP #1, UP #4) at Reϕ=7.32×105,cw=1574—three blade passages—for Model 1
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Autopower spectral density function for blade-periodic static pressure at the outer shroud (UP #1), stator rim seal (UP #5) and stator disk near its rim (UP #6) at Reϕ=7.32×105,Revax=1.12×105, several cw values—for Model 1
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Sealing effectiveness distributions in the disk cavity at Reϕ=7.32×105,Revax=1.12×105,cw=1574, β=37.4 deg—for Model 1
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Sealing effectiveness distributions in the disk cavity at Reϕ=7.74×105,Revax=8.78×104,cw=1504, β=7.2 deg—for Model 2
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Effect of angle β on the normalized ingestion parameter IP* at stator disk surface for selected conditions—Models 1 and 2

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