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Vortex Shedding From a Ship Hull by Means of Tomographic PIV

[+] Author Affiliations
Tale F. Egeberg

MARINTEK, Trondheim, Norway

Hyunse Yoon, Frederick Stern

UI, Iowa City, IA

Bjørnar Pettersen

NTNU, Trondheim, Norway

Shanti Bhushan

MSU, Starkville, MS

Paper No. OMAE2014-23357, pp. V08AT06A030; 11 pages
  • ASME 2014 33rd International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 8A: Ocean Engineering
  • San Francisco, California, USA, June 8–13, 2014
  • Conference Sponsors: Ocean, Offshore and Arctic Engineering Division
  • ISBN: 978-0-7918-4550-9
  • Copyright © 2014 by ASME


The onset and progression of vortices generated by the hull of a surface combatant has been investigated for drift angles of 0, 10 and 20 degrees by means of tomographic particle image velocimetry. Vortices are seen to form on the sonar dome and fore-body of the ship model, as well as on the bilge keels, and on the after-body. Two major streamwise vortex systems were identified: the vortices generated by the sonar dome and the vortices generated on the fore-body of the hull. Leading edge and crossflow vortices form on the bilge keels, and on the windward side, these vortices merge. Vortices are also seen to form on the afterbody of the hull at increased drift angles. Frequency analysis of the sonar dome vortex at drift angle 20 degrees reveals a dominant frequency of approximately 3 Hz.

Copyright © 2014 by ASME
Topics: Ships , Hull , Vortex shedding



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