RESEARCH PAPERS: Fluid-Elastic Vibration Phenomena

Instability Mechanisms and Stability Criteria of a Group of Circular Cylinders Subjected to Cross-Flow. Part I: Theory

[+] Author and Article Information
S. S. Chen

Components Technology Division, Argonne National Laboratory, Argonne, Ill. 60439

J. Vib., Acoust., Stress, and Reliab 105(1), 51-58 (Jan 01, 1983) (8 pages) doi:10.1115/1.3269066 History: Received June 09, 1981; Online November 23, 2009


A mathematical model is presented for a group of circular cylinders subject to cross-flow. It is found that there are two basic dynamic instability mechanisms: instability controlled by fluid damping and instability controlled by fluidelastic force. Approximate closed form solutions of the critical flow velocity for the two mechanisms are obtained based on constrained-mode analyses. The model has identified the key parameters in the stability criteria and their functional forms and resolved the controversy associated with the empirical stability criteria.

Copyright © 1983 by ASME
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