Multiple stable/unstable equilibria of a cylinder in the wake of an upstream cylinder

Wusheng Wu, Shan Huang, Nigel Barltrop

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

15 Citations (Scopus)

Abstract

The static equilibrium position and its associated dynamic stability of a cylinder situated in the wake of an upstream cylinder is investigated in this paper. Both the upstream and downstream cylinders are elastically mounted on springs to allow for streamwise and transverse displacements. Due to the wake effect the downstream cylinder is subject to a lift force as well as a drag. It is shown that under certain flow conditions there exist multiple stable and unstable equilibria for the downstream cylinder. There also exist a critical flow velocity and once this velocity is exceeded no equilibrium positions of the downstream cylinder can be found, which suggests a likely occurrence of clashing between the two cylinders.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Offshore Mechanics and Arctic Engineering
Place of PublicationNew York
Pages467-473
Number of pages7
Publication statusPublished - 1 Dec 2001
Event20th International Conference on Offshore Mechanics and Arctic Engineering; Offshore Technology - Rio de Janeiro, Brazil
Duration: 3 Jun 20018 Jun 2001

Conference

Conference20th International Conference on Offshore Mechanics and Arctic Engineering; Offshore Technology
CountryBrazil
CityRio de Janeiro
Period3/06/018/06/01

Keywords

  • drag
  • hydrodynamics
  • wakes
  • system stability

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