Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
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Numerical Calculation of Flow Pattern and Fluid Force on a Circular Arc-type Sea Anchor

  • Ro, Ki-Deok (School of Mechanical and Aerospace EngineeringㆍInstitute of Marine Industry, Gyeongsang National University) ;
  • Oh, Se-Kyung (School of Mechanical and Aerospace EngineeringㆍInstitute of Marine Industry, Gyeongsang National University)
  • Published : 2004.11.01
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Abstract

The fluid dynamic characteristics of a circular arc type sea anchor were calculated by a discrete vortex method. The flow for the surface of the sea anchor was represented by arranging bound vortices at adequate intervals. The simulations were performed by assuming that the separations occur at edges. With time, the drag coefficient was almost constant but the lift coefficient oscillated in a cycle due to von Karman's vortex street. As the camber ratios increase, the drag coefficient and Strouhal number were almost constant but the oscillating amplitude of the lift coefficient increased largely.

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References

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