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TECHNICAL PAPERS: Gas Turbines: Heat Transfer

Detailed Experimental Studies of Flow in Large Scale Brush Seal Model and a Comparison With CFD Predictions

[+] Author and Article Information
L. H. Chen, P. E. Wood, T. V. Jones

Department of Engineering Science, University of Oxford, Parks Road, Oxford, United Kingdom

J. W. Chew

Mechanical Science Group, Rolls-Royce plc. Moor Lane, Derby, United Kingdom

J. Eng. Gas Turbines Power 122(4), 672-679 (May 15, 2000) (8 pages) doi:10.1115/1.1287265 History: Received March 09, 1999; Revised May 15, 2000
Copyright © 2000 by ASME
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References

Steinetz, B. M., Hendricks, R. C., and Munson, J., 1998, “Advanced Seal Technology Role in Meeting Next Generation Turbine Engine Goals,” NASA/TM-1998-206961, AVT-PPS Paper No. 11, April 1998.
Braun, M. J., Hendricks, R. C., and Cannaci, V. A., 1990, “Flow Visualization in a Simulated Brush Seal,” ASME Paper 90-GT-217.
Braun,  M. J., and Kudriavtsev,  V. V., 1995, “A Numerical Simulation of a Brush Seal Section and Some Experimental Results,” ASME J. Turbomach., 117, pp. 190–202.
Chen, L. H., Wood, P. E., Jones, T. V., and Chew, J. W., 1998, “An Iterative CFD and Mechanical Brush Seal Model and Comparison with Experimental Results,” ASME-98-GT-372.
Turner, M. T., Chew, J. W., and Long, C. A., 1997, “Experimental Investigation and Mathematical Modelling of Clearance Brush Seals,” ASME Paper 97-GT-282.
Chew,  J. W., and Hogg,  S. I., 1997, “Porosity Modelling of Brush Seals,” ASME J. Tribol., 199, pp. 769–775.
Hendricks, R. C., Schlumberger, S., Brown, M. J., Choy, F., and Mullen, R. L., 1991, “A Bulk Flow Model of a Brush Seal System,” ASME Paper 91-GT-325.
Chen, L. H., 1998, “Numerical and Experimental Modelling of Brush Seals,” D. Phil thesis, University of Oxford, U.K.
Wood, P. E., and Jones, T. V., 1997, “A Test Facility for the Measurement of Torques at the Shaft to Seal Interface in Brush Seals,” ASME Paper 97-GT-184.

Figures

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Pressure distributions with varied resistance coefficients: (a) pressure distributions in the axial direction; (b) pressure distributions in the direction along the bristles.
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Divided porous regions with varied resistance coefficients
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Pressure distributions for the clearance seal: (a) pressure distributions in the axial direction; (b) pressure distributions in the direction along the bristles.
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Pressure distribution within the bristle pack (clearance seal: Pu=2.03 bar;Pd=1.47 bar)
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Pressure distributions for the interference seal: (a) pressure distributions in the axial direction; (b) pressure distributions in the direction along the bristles.
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Pressure distribution within the bristle pack (interference seal: Pu=2.11 bar;Pd=1.28 bar)
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Flow characteristics for the interference seals
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Ratio of seal flow to orifice flow versus pressure ratio (clearance seals)
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Flow characteristics for the clearance seals
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Large scale model: (a) Test section; (b) configuration of the interference seal; (c) configuration of the clearance seal.
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Schematic of build clearance brush seal

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