A Theoretical Model for Self-Excited Vibrations in Hydraulic Gates, Valves and Seals

[+] Author and Article Information
D. S. Weaver

McMaster University, Hamilton, Ontario, Canada

S. Ziada

Lehigh University, Bethlehem, Pa. 18015

J. Pressure Vessel Technol 102(2), 146-151 (May 01, 1980) (6 pages) doi:10.1115/1.3263313 History: Received September 19, 1979; Online November 05, 2009


A general theoretical model is presented for the jet flow mechanism of self-excited vibrations of flow control devices operating at small openings. The coupled nonlinear differential equations are solved numerically using the Runge-Kutta method. The vibration displacement and discharge characteristics are given for a variety of parameters such as structural stiffness, fluid inertia and discharge coefficient. The predictions are shown to agree reasonably well with the experimental observations of swing check valve vibrations.

Copyright © 1980 by ASME
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