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RESEARCH PAPERS

Switching Dynamics of Bistable Fluidic Amplifiers With Low Setbacks

[+] Author and Article Information
M. R. Ozgu, A. H. Stenning

Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pa.

J. Dyn. Sys., Meas., Control 94(1), 21-29 (Mar 01, 1972) (9 pages) doi:10.1115/1.3426532 History: Received August 19, 1971; Online July 13, 2010

Abstract

The transient switching of a model bistable fluidic amplifier with low setbacks and variable configuration has been studied. The amplifier was of conventional design with straight and convex side-walls, cusped and pointed splitters, and variable control port width. Water was used as the fluid and the element was operated at different Reynolds numbers. Effect of loading, inertia of the fluid in the output legs, bias flows from the inactive control port, and geometric changes on the transient switching times were determined. The flow field was made visible by generating hydrogen bubbles in the power nozzle and at the power nozzle exit. Using visual studies of the switching process as a guide, an analysis has been developed to predict the switching times approximately.

Copyright © 1972 by ASME
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