Multi-frequency cable vibration experiments
Name
63761771-MIT.pdf
Description
Full printable version
Size
8.04 MB
Format
Adobe PDF
Checksum (MD5)
029959cbf8501bc5e6050c756a6ad8d8
Author(s)
Wiggins, Andrew (Andrew Dale)
Advisor(s)
Michael S. Triantafyllou.
Date Issued
2005
Publisher
Massachusetts Institute of Technology
Abstract
A series of Multi-Frequency cable vibration experiments at Reynolds number 7600 were carried out at the MIT Tow Tank using the Virtual Cable Towing Apparatus (VCTA). Motions observed in a Direct Numerical Simulation of a flexible cylinder in a shear current were imposed on the VCTA and force measurements taken. Results showed a good agreement between the RMS lift coefficients of experiment and simulation. Complex Demodulation Analysis revealed significant lift force phase modulations. This analysis also showed that to a large extent the 3-dimensional behavior of the DNS was captured by the 2-d experiment in regions of low inflow, and to a lesser extent in regions of high inflow. Applications of results to future vortex induced vibration force models are discussed.
Description
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering, 2005.
Includes bibliographical references (p. 99-101).
Subjects
Ocean Engineering.
MIT Department
Massachusetts Institute of Technology. Department of Ocean Engineering
Terms of Use
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