원주의 진동과 칼만 와유출의 동기현상

Lock-in Phenomenon in Oscillation of a Circular Cylinder Subject to a Uniform Flow

  • 배헌민 (부산수산대학교, 공과대학선박공학과) ;
  • 김인철 (부산수산대학교, 공과대학선박공학과)
  • 발행 : 1993.06.01

초록

In is well known that a cyclic Karman vortex street is thrown out periodically from cylinder whose axis is vertical to the bulk flow. When the cylinder is vibrating in the frequency close to that of Karman vortex street, the vortex shedding frequency is locked onto that of cylinder. While there are many experimental studies for this phenomenon compared with analytical studies by numerical calculation, are very limited. In this study, a new algorithm for moving boundary is proposed and a simulator is develoed, which can deal with this phenomenon with experimental studies.

키워드

참고문헌

  1. Proc. Nat. Acad. Sci. v.40-3 Den Hartog, J. P.
  2. trans. ASME, J. Fluid Eng. Modification of Vortex Shedding in the Synchronization Range Zdravkovich,M.M.
  3. 日本 機械 學會 論文集(B) 一樣流中で正弦振動すゐ圓柱まわりの流わ 水田(外 3名)
  4. Trans. ASME J. Fluids Eng. v.107 Shirakashi,M.(et al.)
  5. Computational Fluid Dynamics Roache,P.J.
  6. NASA, CR-2729 Boundary-Fitted Curvilinear Coordinate System for Solution of Partial Difference Equations on Fields Containing Any Number of Arbitrary two-Dimensional Bodies Thompson,J.F.
  7. Proc. 7th Int. Conf. Numerical Analysis for Lock-in Phenomenon of Vibrating Cylinder in Uniform Flow Oogane,K.;BAE,H.M.;Shirakashi,M.;Sakuta,H.
  8. Nat. Phy. Lab. Symp. On the Wind Excited Oscillation of Stacks, Tower and Masts Scruton,C.
  9. AIAA Paper v.84-0340 Computation of High Reynolds Number Flow around a Circular Cylinder with Surface Roughness Kawamura,T.