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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Predicted Geometry Effects on Oil Vapor Flow Through Buffer-Gas Labyrinth Seals

[+] Author and Article Information
S.-Y. Park, D. L. Rhode

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

J. Eng. Gas Turbines Power 125(1), 193-200 (Dec 27, 2002) (8 pages) doi:10.1115/1.1520540 History: Received July 01, 2000; Revised September 01, 2002; Online December 27, 2002
Copyright © 2003 by ASME
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References

Park,  S.-Y., and Rhode,  D. L., 2003, “Predicted Effects of Bearing Sump and Injection Pressure on Oil Labyrinth Leakage,” ASME J. Eng. Gas Turbines Power, 125, pp. 316–325.
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Rhode,  D. L., and Hibbs,  R. I., 1993, “Clearance Effects on Corresponding Annular and Labyrinth Seal Flow Leakage Characteristics,” ASME J. Tribol., 115, pp. 699–704.
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Figures

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Schematic diagram of the buffer-gas labyrinth seal
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Comparison of computed and empirical-correlation Sherwood number with Reynolds number for pipe flow
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Flow fields and radial concentration distribution of the seal
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Axial oil vapor bulk concentration distribution for various tooth pitch (A) values
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Variation of seal-exit oil vapor mass flow with tooth pitch (A) and oil film length (z/L)
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Axial oil vapor bulk concentration distribution for various cavity depth (H) values
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Variation of seal-exit oil vapor mass flow with cavity depth (H) and oil film length (z/L)
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Axial oil vapor bulk concentration distribution for various tooth clearance (Cr) values
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Variation of seal-exit oil vapor mass flow with tooth clearance (Cr) and oil film length (z/L)
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Variation of injection cavity pressure and the buffer-gas mass flow to the process side with injection slot width (W)
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Axial oil vapor bulk concentration distribution for various injection slot width (W) values
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Variation of seal-exit oil vapor mass flow with injection slot width (W) and oil film length (z/L)

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