Journal of Ship and Ocean Technology

The Society of Naval Architects of Korea (대한조선학회)
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Numerical Computation for the Comparison of Stern Flows around Various Twin Skegs

  • Kim, Jin (Maritime and Ocean Engineering Research Institute, KORDI) ;
  • Park, Il-Ryong (Maritime and Ocean Engineering Research Institute, KORDI) ;
  • Van, Suak-Ho (Maritime and Ocean Engineering Research Institute, KORDI) ;
  • Choi, Young-Bok (Daewoo Shipbuilding and Marine Engineering Co., Ltd.) ;
  • Park, No-Joon (Hanjin Heavy Industries and Construction Co., Ltd.)
  • Published : 2006.06.01
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Abstract

Numerical analysis of viscous flow around twin-skeg hull forms was conducted according to the variations of distance between skegs and vertical skeg inclinations by using a hydrodynamic analysis system, WAVIS. Six twin-skeg hull forms were derived by combining three distances between skegs (16m, 20m, 24m) and four vertical skeg angles ($0^{\circ},\;10^{\circ},\;15^{\circ},\;20^{\circ}$). It is found that the better resistance performance can be obtained with larger vertical skeg angle and smaller skeg distance for the present test cases. It also can be seen that the same trend is true for the nominal wake distributions in the propeller plane. Those tendencies were confirmed by the experimental results of MOERI. It is shown that numerical analysis can be a useful and practical tool for the evaluation and improvement of hydrodynamic performances for the complex stern hull forms with twin skegs.

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References

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