A Simplified Method for Determining Acoustic and Tube Eigenfrequencies in Heat Exchangers

[+] Author and Article Information
J. Planchard, F. N. Remy, P. Sonneville

Electricité de France, Direction des Etudes et Recherches, Clamart, France

J. Pressure Vessel Technol 104(3), 175-179 (Aug 01, 1982) (5 pages) doi:10.1115/1.3264200 History: Received March 19, 1982; Online November 05, 2009


A method of computation of eigenfrequencies of large tube arrays is presented, which is based on homogenization techniques. It is supposed that the fluid is compressible, at rest and contained in a cavity; the bundle geometry is assumed to be repetitive; an equivalent sound velocity through the tubes can then be calculated, and the fluid-structure interaction is taken into account. A new eigenvalue problem is so obtained, defined over a simpler domain, i.e., the region occupied by both fluid and tubes; it is then easy to solve it for computing the eigenfrequencies of the coupled system. Numerical and experimental results are presented and some details of the experimental apparatus are given.

Copyright © 1982 by ASME
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