Slow drift oscillations of a large vertical surface-piercing circular cylinder: preliminary data analysis of phase I towing tank experiments

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TypeTechnical Report
Series titleLaboratory Memorandum
Subjectvertical cylinder; circular cylinder; surface-piercing cylinder; hydrodynamic loads; forces and moments; uniform current; waves free oscillations; forced oscillations; in-line oscillations; compliant air bearing; electric servo motor; control systems; towing tank; transducers; data acquisition system; digital filter; database
AbstractIMD conducted a series of experiments in the Clearwater Towing Tank with a large (0.8m diameter, 3.3m long) vertical surface-piercing circular cylinder. The objective of the experiments was to measure the hydrodynamic loads on this cylinder while it undergoes free and forced in-line oscillations, while exposed to various combinations of calm water, uniform current and waves. The simulated conditions correspond to those that a single leg of a Tension Leg Platform experiences during slow drift oscillations in waves. A companion report defines the scope of the experiments and describes the experimental procedures, and finally outlines future experiments which would continue the study. This report presents the data in coherent form, and provides preliminary analysis of the data. The report makes suggestions for further analysis of the data.
Publication date
PublisherNational Research Council Canada. Institute for Marine Dynamics
PlaceSt. John's, NL
AffiliationNRC Institute for Ocean Technology; National Research Council Canada
Peer reviewedNo
NRC number5239
NPARC number8895935
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Record identifiera4dd8fe5-c698-45a0-b5d2-e1d2a19412b3
Record created2009-04-22
Record modified2016-10-03
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