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TECHNICAL PAPERS

Dynamic Force Coefficients of a Multiple-Blade, Multiple-Pocket Gas Damper Seal: Test Results and Predictions

[+] Author and Article Information
Jiming Li

Elliott Company, Jeanette, PA 15644

Ramon Aguilar, Luis San Andrés, John M. Vance

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

J. Tribol 122(1), 317-322 (Jun 29, 1999) (6 pages) doi:10.1115/1.555360 History: Received February 04, 1999; Revised June 29, 1999
Copyright © 2000 by ASME
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References

Figures

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Seal direct damping coefficients versus pressure ratio. Tests and predictions at 3000 rpm.
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Seal direct stiffness coefficients (KXX and KYY) versus journal speed. Tests and predictions for a pressure ratio of 2.0.
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Geometry of a four-blade, two-four pocket damper seal
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Schematic view of test rig for identification of force coefficients in gas damper seals
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Seal mass flow rate versus pressure ratio. Tests and predictions at 3000 rpm.
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Seal direct stiffness coefficients versus pressure ratio. Tests and predictions at 3000 rpm.
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Seal direct stiffness coefficients (KXX and KYY) versus journal speed. Tests and predictions for a pressure ratio of 2.5.
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Seal direct damping coefficients (CXX and CYY) versus journal speed. Tests and predictions for a pressure ratio of 2.0.
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Seal direct damping coefficients (CXX and CYY) versus journal speed. Tests and predictions for a pressure ratio of 2.5.
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Seal cross-coupled stiffness coefficients (KXY and KYX) versus journal speed. Tests and predictions for a pressure ratio of 2.0.

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