Dynamics of a Cluster of Flexibly Interconnected Cylinders, Part 2: In Axial Flow

[+] Author and Article Information
M. P. Paidoussis, J.-P. Chaubernard, M. R. Genadry, K. N. El Barbir

Department of Mechanical Engineering, McGill University, Montreal, Québec, Canada

J. Appl. Mech 50(2), 429-435 (Jun 01, 1983) (7 pages) doi:10.1115/1.3167055 History: Received January 01, 1982; Revised October 01, 1982; Online July 21, 2009


In this paper the dynamical characteristics are discussed of a cluster of cylinders, the extremities of which are interconnected by beam-like connectors, modeled here by sets of linear springs as formulated in Part 1 of this study; resistance to both in-plane and out-of-plane deformation of the connectors is taken into account. The cylinders are subjected to axial flow, and hydrodynamic coupling in cylinder motions is taken into account. The system eigenfrequencies and modal shapes are calculated for different conditions of structural and hydrodynamic coupling. The effect of increasing flow on the dynamics of the system is also studied, up to and beyond the threshold of fluid-elastic instabilities.

Copyright © 1983 by ASME
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