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RESEARCH PAPERS

A Study of the Impact Dynamics of Loosely Supported Heat Exchanger Tubes

[+] Author and Article Information
H. G. D. Goyder, C. E. Teh

AERE Harwell, Didcot, Oxon ORA, England

J. Pressure Vessel Technol 111(4), 394-401 (Nov 01, 1989) (8 pages) doi:10.1115/1.3265696 History: Received August 07, 1988; Revised February 22, 1989; Online November 05, 2009

Abstract

Heat exchanger tube bundles may be damaged by vibration induced from the cross flow. This damage generally occurs at the tube supports where the tube is only loosely supported. The loose support results in the tube motion being strongly nonlinear with very complicated dynamics. Some theoretical equations for the tube dynamics and wear rates are investigated by using dimensional analysis, physical modeling and numerical simulations. From the analysis of these equations, some simple formulas are developed which show the influence of excitation level and tube-to-support clearance on the tube response.

Copyright © 1989 by ASME
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