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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

Figures

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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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