Current tank tests have been performed on two equal-diameter, flexible cylinders in tandem with various end spacings or separation distances. While the cylinders experienced transverse vortex-induced vibration in only the first mode, the test Reynolds numbers were well into the transition range, and the drag crisis was clearly observed on the upstream cylinder. Both acceleration and drag were measured to provide some interesting correlations between vibration, drag, and end spacing for each of the two cylinders.

Issue Section:
Deep-Water Petroleum
Keywords:
pipe flow, vibrations, vortices, vortex-induced vibration (VIV), risers, interference
Topics:
Cylinders, Drag (Fluid dynamics), Pipeline risers, Reynolds number, Risers (Casting), Vortex-induced vibration, Vibration, Engineering prototypes
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, and
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Vortex-Induced Vibration Current Tank Tests of Two Equal-Diameter Cylinders in Tandem
,”
J. Fluids Struct.
0889-9746,
17
, pp.
767
–
781
.
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2.
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, and
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Vortex-Induced Vibration Current Tank Tests of Two Equal Diameter Cylinders Offset From Tandem
,”
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,
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, and
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,”
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,
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, and
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,
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Prototype Vortex-Induced Vibration Tests for Production Risers
,”
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,
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Lee
,
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,
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,
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, and
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,
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Motion Trajectory of Bare and Suppressed Tubulars Subjected to Vortex Shedding at High Reynolds Numbers
,”
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Copyright © 2008
 by American Society of Mechanical Engineers
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