Journal of the Society of Naval Architects of Korea (대한조선학회논문집)

The Society of Naval Architects of Korea (대한조선학회)
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Study of Ship Squat for KVLCC2 in Shallow Water

KVLCC2 선형의 천수영역에서의 자세 변화에 대한 연구

  • Yun, Kunhang (Korea Research Institute of Ships & Ocean Engineering) ;
  • Park, Kyurin (Korea Research Institute of Ships & Ocean Engineering) ;
  • Park, ByoungJae (Korea Research Institute of Ships & Ocean Engineering)
  • 윤근항 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 박규린 (한국해양과학기술원 부설 선박해양플랜트연구소) ;
  • 박병재 (한국해양과학기술원 부설 선박해양플랜트연구소)
  • Received : 2014.08.29
  • Accepted : 2014.11.19
  • Published : 2014.12.20
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Abstract

Ship squat is a well known phenomenon, which means an additional sinkage and a change of trim when a ship sails in shallow water. As a series of ship squat study, a HPMM(Horizontal Planar Motion Mechanism) test of KVLCC2 model ship to measure a sinkage and a trim in shallow water was conducted. Additionally a CFD(Computational Fluid Dynamics) analysis was carried out to simulate fluid flows around the ship surface. A change in ship speed, drift angle at three depth conditions(H/T = 1.2, 1.5 & 2.0) is considered for comparing these results. As a result, an increase of the ship speed and the drift angle caused an increase in ship squat in EFD(Experimental Fluid Dynamics), and created a lower pressure on the ship bottom area in CFD. Lastly the sinkage results of KVLCC2 by EFD and CFD are compared to results by three empirical formulas. The tendency of sinkage by EFD and CFD is similar to the results of empirical formulas.

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References

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