This paper presents the results of a test series to study the vibration behavior of a normal triangular tube bundle subjected to two-phase Freon cross flow. A normal triangular tube bundle of pitch over diameter ratio of 1.5 was tested over a broad range of void fractions and mass fluxes. Fluidelastic instabilities, random turbulence excitation, and damping were investigated. The results were compared with those obtained for a similar tube bundle tested in an air-water cross flow and to those for a rotated triangular bundle similarly tested in Freon.
Issue Section:
Fluid-Structure Interaction
Keywords:
damping,
flow instability,
heat exchangers,
pipe flow,
pipes,
refrigerants,
turbulence,
two-phase flow,
vibrations
Topics:
Cross-flow,
Damping,
Excitation,
Flow (Dynamics),
Turbulence,
Two-phase flow,
Vibration,
Water,
Porosity
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.Copyright © 2009
by American Society of Mechanical Engineers
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