The Dynamics of Vortex Amplifiers. Part 1: Analytical Model

[+] Author and Article Information
E. E. Kitsios, R. F. Boucher

Department of Mechanical Engineering, The University of Sheffield, GB-Sheffield S1 3JD, England

J. Dyn. Sys., Meas., Control 107(3), 176-181 (Sep 01, 1985) (6 pages) doi:10.1115/1.3140717 History: Received April 23, 1984; Online July 21, 2009


A semi-empirical technique for the dynamic modeling of vortex amplifiers is demonstrated with reference to one particular vortex amplifier geometry. The model parameters are determined explicitly from the amplifier static characteristics and geometry except for two which are estimated from measurements of the amplifier’s dynamic response. The two are time constants associated with the chamber time delay and the vortex rotational inertia. The model is linearized about a working point and is presented in terms of an admittance matrix. The paper is continued in Part 2 where two of the amplifier’s transfer admittances are measured experimentally and compared with the model predictions.

Copyright © 1985 by ASME
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