Journal of the Korean Society for Aeronautical & Space Sciences (한국항공우주학회지)

The Korean Society for Aeronautical and Space Sciences (한국항공우주학회)
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Numerical analysis of the vortex induced vibration of the 2-D cylinder using dynamic deforming mesh

동적격자변형기법을 이용한 2차원 실린더의 와류유발진동에 대한 수치해석

  • Lee, Namhun (Department of Aerospace Engineering, INHA University) ;
  • Baek, Jiyoung (Department of Aerospace Engineering, INHA University) ;
  • Lee, Seungsoo (Department of Aerospace Engineering, INHA University)
  • Received : 2012.09.10
  • Accepted : 2012.12.13
  • Published : 2013.01.01
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Abstract

In this paper, numerical simulations are performed on the lock-in phenomena of vortex induced vibration(VIV) of a two dimensional cylinder. A deforming grid as well as a rigidly moving grid are used to simulate the movement of the cylinder. The grid deformation is accomplished by the linear spring analogy. Converged solutions, which are obtained by controling the grid size and the non-dimensional time step, are used for comparison and validation of the analysis results. Moreover, the efficiency and the accuracy of the coupling methods for fluid-structure interaction are examined.

이 논문에서는 2 차원 실린더의 와류유발진동에 따른 Lock-in 현상에 대해 수치해석을 수행하였다. 실린더의 운동을 모사하기 위해 변형격자와 고정격자를 이용하였다. 스프링 상사기법을 이용하여 격자를 변형하였다. 격자수 및 시간 간격 등을 조절해 얻은 수렴된 수치해가 비교 및 검증에 사용되었다. 또한, 유체-구조 결합 방법들의 효율성과 정확도를 비교 검토하였다.

Keywords

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