대한조선학회논문집 (Journal of the Society of Naval Architects of Korea)

  • 제48권3호
  • /
  • Pages.260-266
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  • 2011
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  • 1225-1143(pISSN)
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  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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직교격자를 이용한 단순 세장 구조물의 와유기 진동 해석

Vortex-Induced Vibration of Simple Slender Structure Using Cartesian Mesh

  • 한명륜 (울산대학교 조선해양공학부) ;
  • 안형택 (울산대학교 조선해양공학부)
  • Han, Myung-Ryoon (School of Naval Architecture & Ocean Engineering, University of Ulsan) ;
  • Ahn, Hyung-Teak (School of Naval Architecture & Ocean Engineering, University of Ulsan)
  • 투고 : 2010.12.13
  • 심사 : 2011.04.20
  • 발행 : 2011.06.20
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초록

For long slender offshore structures, such as cables and pipe lines, their interaction with surrounding fluid flow becomes an important issue for global design of ocean systems. We employ a long circular cylinder as a representative case of slender offshore structure. A flexibly mounted cylinder in cross-flow generates complex vortex shedding and results in oscillation of the structure. In this paper, flow behind a circular cylinder at Re=100 is simulated. The vortex shedding pattern and flow induced motion are examined in the cross flow configuration as well as with various yaw-angled configurations. The "Lock-in" phenomenon is also observed when reduced velocity is approximately 4.0. The MAC Grid system, which is the typical grid system for Cartesian mesh and pressure correction methods, are used for solving the incompressible Navier-Stokes equations. Predictor/Corrector method is applied for obtaining a non-linear response of structure at the flexibly mounted. The existance and motion of the body is represented by the immersed boundary technique.

키워드

참고문헌

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피인용 문헌

  1. FLUID-STRUCTURE INTERACTION ANALYSIS FOR VORTEX-INDUCED VIBRATION OF CIRCULAR CYLINDER vol.17, pp.1, 2012, https://doi.org/10.6112/kscfe.2012.17.1.029