A study on passive methods of vortex induced vibrations suppression
Name
302419338-MIT.pdf
Description
Full printable version
Size
56.02 MB
Format
Adobe PDF
Checksum (MD5)
0c61aec90a020dd0bb0ea5a22867bc9e
Author(s)
Galvao, Richardo A
Advisor(s)
Michael S. Triantafyllou.
Date Issued
2008
Publisher
Massachusetts Institute of Technology
Abstract
A number of engineering systems, including those found in offshore operations, are often affected by vortex-induced vibrations (VIV). This phenomenon is caused by the interaction between a structure and shed vortices which can result in large amplitude vibrations of the structure that may lead to severe damage over time. Repairs to these systems are costly and time-consuming. Significant effort has been expended to develop a means of eliminating the need of repairs from vibrations. An investigation was undertaken to find a method of suppressing vortex-induced vibrations of a cylinder in a fluid flow. Passive methods of altering the flow behavior around the structure to mitigate the hydrodynamic forces that cause VIV were considered. Structural enhancements to a cylinder were attempted to accomplish this goal. The study also aimed to reduce drag below that encountered for a bare cylinder in comparable flow in addition to reducing flow induced vibrations. A number of approaches attempted succeeded in accomplishing this goal.
Description
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 2008.
Includes bibliographical references (p. 109-111).
Subjects
Aeronautics and Astronautics.
MIT Department
Massachusetts Institute of Technology. Department of Aeronautics and Astronautics
Terms of Use
M.I.T. theses are protected by
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
copyright. They may be viewed from this source for any purpose, but
reproduction or distribution in any format is prohibited without written
permission. See provided URL for inquiries about permission.
Persistent DSpace Link
