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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Air Entrainment Versus Lubricant Vaporization in Squeeze Film Dampers: An Experimental Assessment of Their Fundamental Differences

[+] Author and Article Information
S. E. Diaz, L. A. San Andrés

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

J. Eng. Gas Turbines Power 123(4), 871-877 (Oct 01, 1998) (7 pages) doi:10.1115/1.1383258 History: Received October 01, 1998; Received March 01, 1999
Copyright © 2001 by ASME
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References

Figures

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Test apparatus; (a) squeeze film damper detail, (b) schematic of test rig and instrumentation
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Dynamic pressure and journal displacement versus time; (a) flooded plenum and (b) vented plenum
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Development of the period-averaged pressure field and uniform pressure zone versus shirl frequency (flooded and vented end conditions); (a) flooded plenum, (b) vented plenum
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Peak-to-peak pressure versus whirl frequency (flooded and vented end conditions and predictions
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Radial and tangential forces versus whirl frequency (flooded and vented end conditions and predictions)
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Development of the period-averaged pressure field and uniform pressure zone versus the lubricant flow and supply pressure; (a) whirl frequency 16.67 Hz (1000 rpm), (b) whirl frequency 8.33 Hz (500 rpm)
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Peak-to-peak pressures versus oil flow rate and supply pressure for two whirl frequencies
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Radial and tangential forces versus oil flow rate (supply pressure) for two whirl frequencies

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