Selected test results are presented for an annular gas seal using a smooth rotor and a hole-pattern-roughness stator for a supply pressure of 70 bar, three pressure ratios, three speeds up to 20,000 rpm, two clearances, and three preswirl ratios. Dynamic data include frequency-dependent direct and cross-coupled stiffness and damping coefficients. Static data include leakage and upstream and downstream pressures and temperatures. Very good agreements are found between measurements and predictions from a two-control-volume bulk-flow model.
Rotordynamic-Coefficient and Leakage Characteristics for Hole-Pattern-Stator Annular Gas Seals—Measurements Versus Predictions
Contributed by the Tribology Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for presentation at the STLE/ASME Joint International Tribology Conference, Ponte Vedra, FL October 26–29, 2003. Manuscript received by the Tribology Division February 20, 2003; revised manuscript received July 18, 2003. Associate Editor: M. Fillon.
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Childs, D. W., and Wade, J. (April 19, 2004). "Rotordynamic-Coefficient and Leakage Characteristics for Hole-Pattern-Stator Annular Gas Seals—Measurements Versus Predictions ." ASME. J. Tribol. April 2004; 126(2): 326–333. https://doi.org/10.1115/1.1611502
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