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

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 tube...

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Bibliographic Details
Published in:Journal of pressure vessel technology 1982-08, Vol.104 (3), p.175-179
Main Authors: Planchard, J, Remy, F. N, Sonneville, P
Format: Article
Language:English
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Summary: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.
ISSN:0094-9930
1528-8978
DOI:10.1115/1.3264200