A Theoretical Model for Fluid-Elastic Instability in Heat Exchanger Tube Bundles

DOI PDF 2 Citations
  • J. H. Lever
    Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada
  • D. S. Weaver
    Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada

Bibliographic Information

Published
1982-08-01
DOI
  • 10.1115/1.3264196
Publisher
ASME International

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<jats:p>A simple theoretical model has been developed from first principles for the fluid-elastic instability in heat exchanger tube bundles. A series of experiments were conducted to verify the basic assumption that only a single tube need be modeled in a flow channel which preserves the basic geometry of the array. The mechanism of instability is found to be one of flow redistribution due to tube motion and a phase lag resulting from fluid inertia. Quite good agreement is found with available experimental data for a parallel triangular array without the need for empirical fluid force coefficients. The model includes the effects of tube array pattern and pitch.</jats:p>

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