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

  • 제31권9호
  • /
  • Pages.754-763
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  • 2007
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  • 1226-4881(pISSN)
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  • 2288-5324(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
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Forces Induced by Flows Past Two Nearby Circular Cylinders

  • 이경준 (인하대학교 대학원 기계공학과) ;
  • 윤동혁 (인하대학교 대학원 기계공학과) ;
  • 양경수 (인하대학교 기계공학부)
  • 발행 : 2007.09.01
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초록

Flow-induced forces on two identical nearby circular cylinders immersed in the cross flow at Re=100 were numerically studied. We consider all possible arrangements of the two circular cylinders in terms of the distance between the two cylinders and the inclination angle with respect to the direction of the main flow. It turns out that significant changes in the characteristics of flow-induced forces are noticed depending on how the two circular cylinders are positioned, resulting in quantitative changes of force coefficients on both cylinders. Collecting all the numerical results obtained, we propose a contour diagram for drag coefficient and lift coefficient for each of the two cylinders. The perfect geometrical symmetry implied in the flow configuration allows one to use those diagrams to estimate flow-induced forces on two identical circular cylinders arbitrarily positioned in physical space with respect to the main flow direction.

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참고문헌

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피인용 문헌

  1. Reynolds-number Effect on the Flow Past Two Nearby Circular Cylinders vol.32, pp.1, 2008, https://doi.org/10.3795/KSME-B.2008.32.1.030