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Experimental and Numerical Investigations of an Untethered, Nonlinear Spherical Buoy in a Wave Tank

[+] Author Affiliations
Zach Ballard, Brian Mann

Duke University, Durham, NC

Paper No. DETC2011-48401, pp. 429-437; 9 pages
  • ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference
  • Volume 1: 23rd Biennial Conference on Mechanical Vibration and Noise, Parts A and B
  • Washington, DC, USA, August 28–31, 2011
  • Conference Sponsors: Design Engineering Division and Computers and Information in Engineering Division
  • ISBN: 978-0-7918-5478-5
  • Copyright © 2011 by ASME


The horizontal and vertical motions of a spherical buoy, excited by synthetic ocean waves within a wave flume, is numerically and experimentally investigated. First, fluid motion in the wave tank is described using Airy’s theory, and the forces on the buoy are determined using a modified form of Morison’s equation. The system is then studied statically in order to determine the effects of varying system parameters. Numerical simulations then use the governing equations to compare predicted motions with experimentally observed behavior.

Copyright © 2011 by ASME
Topics: Waves , Buoys



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