Effect of Tube-to-Tube Ties on Fluidelastic Instability of Tube Arrays Exposed to Crossflow

[+] Author and Article Information
F. L. Eisinger

Foster Wheeler Energy Corporation, Clinton, NJ 08809

M. M. Rao

Foster Wheeler Development Corporation, Livingston, NJ 07039

J. Pressure Vessel Technol 120(2), 179-185 (May 01, 1998) (7 pages) doi:10.1115/1.2842237 History: Received November 19, 1997; Revised December 16, 1997; Online February 11, 2008


Tube-to-tube ties and their arrangement within the tube array are shown to affect the onset of fluidelastic instability. The influence of tie arrangement for a single tube row and for an in-line tube array is obtained by numerical simulation using S. S. Chen’s unsteady flow theory. Maps of dimensionless critical velocities for groups of tubes consisting of two, three, four, and five tubes tied to each other are developed for several design configurations. It is shown that the stability limits can be raised by appropriate choice of tube group and tie location.

Copyright © 1998 by The American Society of Mechanical Engineers
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