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RESEARCH PAPERS

Rub-Groove Width and Depth Effects on Flow Predictions for Straight-Through Labyrinth Seals

[+] Author and Article Information
David L. Rhode

Mechanical Engineering Department, Texas A&M University, College Station, TX 77843-3123

Richard G. Adams

Texaco E & P, Inc., New Orleans, LA 70130

J. Tribol 126(4), 781-787 (Nov 09, 2004) (7 pages) doi:10.1115/1.1760555 History: Received January 03, 2002; Revised March 16, 2004; Online November 09, 2004
Copyright © 2004 by ASME
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References

Zimmerman, H., Kammerer, A., and Wolff, K. H., 1994, “Performance of Worn Labyrinth Seals,” ASME 94-GT-131.
Stocker, H. L., Cox, D. M., and Holle, G. F., 1977, “Aerodynamic Performance of Conventional and Advanced Design Labyrinth Seals with Solid-Smooth, Abradable, and Honeycomb Lands,” Detroit Diesel Allison, Division of GMC, Indianapolis, IN, prepared for NASA, Contract NAS 3-20056.
Yu, Z., and Childs, D. W., 1995, “Experimental Rotordynamic Coefficient and Static Characteristic Results for a Labyrinth Rotor Running Against a Grooved Stator with L/D=0.466,Cr/r=0.0036,” Mechanical Engineering Department, Turbomachinery Laboratories, Texas A&M University.
Rhode, D. L., and Allen, B. F., 1998, “Visualization and Measurements of Rub-Groove Leakage Effects on Straight-Through Labyrinth Seals,” ASME Paper 98-GT-506, presented at the ASME International Gas Turbine & Aeroengine Congress & Exhibition, Stockholm.
Rhode,  D. L., and Allen,  B. F., 2001, “Measurement and Visualization of Leakage Effects of Rounded Teeth Tips and Rub-Grooves on Stepped Labyrinths,” ASME J. Eng. Gas Turbines Power, 123, pp. 604–611.
Rhode,  D. L., and Adams,  R. G., 2001, “Computed Effect of Rub-Groove Size on Stepped Labyrinth Seal Performance,” STLE Tribol. Trans., 44(4), pp. 523–532.
Leonard,  B. P., 1979, “A Stable and Accurate Convective Modeling Procedure Based on Quadratic Upstream Interpolation,” Comput. Methods Appl. Mech. Eng., 19, pp. 59–98.
Rhode,  D. L., Demko,  J. A., Traegner,  U. K., Morrison,  G. L., and Sobolik,  S. R., 1986, “Predictions of Incompressible Flow in Labyrinth Seals,” ASME J. Fluids Eng., 108, pp. 19–25.
Rhode,  D. L., and Sobolik,  S. R., 1986, “Simulation of Subsonic Flow Through a Generic Labyrinth Seal,” ASME J. Eng. Gas Turbines Power, 108, pp. 674–680.
Van Doormaal,  J. P., and Rathby,  G. D., 1984, “Enhancements of the Simple Method for Predicting Incompressible Fluid Flows,” Numer. Heat Transfer, 7, pp. 147–163.
Launder, B. E., and Spalding, D. B., 1972, Mathematical Models of Turbulence, Academic Press, London.
Egli,  A., 1935, “The leakage of Steam Through Labyrinth Seals,” Trans. ASME, 57, pp. 115–122.
Moody,  L. F., 1944 “Friction Factors for Pipe Flow,” Trans. ASME, 66(8), pp. 671–684.

Figures

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Straight-through labyrinth seal with rub grooves
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Comparison between Stocker et al. 2 measurements and predictions for honeycomb labyrinth seal
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Friction coefficient versus Reynolds number: intermediate width rub-groove with large pressure ratio
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Friction coefficient versus Reynolds number: narrow width rub-groove with small pressure ratio
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Friction coefficient versus Reynolds number: large rub-groove width with large pressure ratio
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Friction coefficient versus Reynolds number: small rub-groove width with large pressure ratio
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Magnified view of velocity vectors: intermediate depth and intermediate width rub-groove with large pre-rub clearance
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Magnified view of velocity vectors: intermediate depth and narrow width rub-groove with large pre-rub clearance
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Magnified view of velocity vectors: shallow depth and narrow width rub-groove with intermediate pre-rub clearance
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Magnified view of velocity vectors: large depth and narrow width rub-groove with intermediate pre-rub clearance
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Magnified view of velocity vectors: shallow depth and narrow width rub-groove with small pre-rub clearance
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Overall velocity vectors: shallow depth and narrow width rub-groove with small pre-rub clearance
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Magnified view of velocity vectors: intermediate depth and narrow width rub-groove with small pre-rub clearance
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Overall velocity vectors: intermediate depth and narrow width rub-groove with small pre-rub clearance
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Magnified view of velocity vectors: large depth and narrow width rub-groove with small pre-rub clearance
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Overall velocity vectors: large depth and narrow width rub-groove with small pre-rub clearance
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Friction coefficient versus Reynolds number: intermediate width rub-groove with small pressure ratio

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