Mechanism of ovalling vibrations of cylindrical shells in cross flow

Y. Uematsu, N. Tsujiguchi, M. Yamada

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

The mechanism of wind-induced ovalling vibrations of cylindrical shells is numerically investigated by using a vortex method. The subject of this paper is limited to a two-dimensional structure in the subcritical regime. The aerodynamic stability of the ovalling vibrations in the second to fourth circumferential modes is discussed, based on the results of a forced-vibration test. In the analysis, two modal configurations are considered one is symmetric and the other is anti-symmetric with respect to a diameter parallel to the flow direction. The unsteady pressures acting on a vibrating cylinder are simulated and the work done by them for one cycle of a harmonic motion is computed. The effects of a splitter plate on the flow around the cylinder as well as on the aerodynamic stability of the ovalling vibrations are also discussed. The consideration on the mechanism of ovalling vibrations is verified by the results of a free-vibration test.

Original languageEnglish
Pages (from-to)85-100
Number of pages16
JournalWind and Structures, An International Journal
Volume4
Issue number2
DOIs
Publication statusPublished - 2001 Apr

Keywords

  • Circular cylinder
  • Cross flow
  • Numerical simulation
  • Ovalling vibration
  • Two-dimensional
  • Unsteady aerodynamic force
  • Vortex method

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Modelling and Simulation

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