Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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A Study of Flow Characteristics of Two Oscillating Cylinders

진동하는 두 개의 실린더 주위의 유동특성에 관한 연구

  • 이대성 (부산대학교 대학원 기계공학과) ;
  • 윤현식 (부산대학교 첨단조선공학연구센터) ;
  • 하만영 (부산대학교 기계공학부)
  • Published : 2007.06.01
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Abstract

Flows around two oscillating cylinders in side-by-side arrangement at Re=185 are simulated using an immersed boundary method. The cylinders oscillate vertically in opposite directions in uniform cross-flow. We describe flow patterns, drag and lift forces by varying distance between two cylinders $(1.4{\leq}g{\leq}2.2,\;1.0{\leq}g{\leq}1.8)$ and oscillating frequency ratios $(f_e/f_o=0.8,\;f_e/f_o=1.0\;and\;f_e/f_o =1.2)$. Wake patterns, drag and lift coefficients are affected by both of frequency ratio and gap between two cylinders. Near wakes of each case are classified with the definition of previous studies.

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References

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