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TECHNICAL PAPERS

Effects of Reynolds Number and Pressure Ratio on Leakage Loss and Heat Transfer in a Stepped Labyrinth Seal

[+] Author and Article Information
K. Willenborg, S. Kim, S. Wittig

Lehrstuhl und Institut für Thermische Strömungsmaschinen, Universität Karlsruhe, 76128 Karlsruhe, Germany

J. Turbomach 123(4), 815-822 (Feb 01, 2001) (8 pages) doi:10.1115/1.1397304 History: Received February 01, 2001
Copyright © 2001 by ASME
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References

Figures

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Labyrinth seal geometry: l/t=0.46,H/t=0.14,b/t=0.047,s/t=0.043[[ellipsis]]0.114,t(1×)=7 mm,t(4×)=28 mm
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Labyrinth seal test facility
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Test sections with instrumentation
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Discharge coefficients, s/b=0.909
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Discharge coefficients, s/b=1.515
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Discharge coefficients, s/b=2.424
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Flow coefficient α of a sharp-edged orifice as a function of Reynolds number (Egli 5)
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Coefficients of discharge for annular orifices (Bell et al. 28)
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Local Nusselt numbers at the stator, s/b=0.909
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Local Nusselt numbers at the rotor, s/b=0.909
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Local Nusselt numbers at the stator, s/b=2.424
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Local Nusselt numbers at the rotor, s/b=2.424
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Mean Nusselt numbers for the stator
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Mean Nusselt numbers for the rotor

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