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

The Society of Naval Architects of Korea (대한조선학회)
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Effects of Trim Conditions on Ship Resistance of KCS in Short Waves

단파장 영역에서 운항 자세가 KCS의 선체 저항에 미치는 영향

  • Kim, Yeoun Joo (Department of Naval Architecture and Offshore Engineering, Dong-A University) ;
  • Lee, Sang Bong (Department of Naval Architecture and Offshore Engineering, Dong-A University)
  • 김연주 (동아대학교 조선해양플랜트공학과) ;
  • 이상봉 (동아대학교 조선해양플랜트공학과)
  • Received : 2016.07.13
  • Accepted : 2017.05.23
  • Published : 2017.06.20
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Abstract

Numerical simulations of turbulent two phase flows around KCS have been performed to investigate effects of trim conditions on ship resistance of KCS in short waves by utilizing waves2foam. The wave lengths of LPP/2 and LPP/4 with 1m and 2m wave heights were imposed at inlet boundary. The resistance reduction at 2m trim by head and the increase of resistance at trims by stern were observed regardless of wave lengths and wave heights. The hull pressure on fore-and-aft rather than wave patterns around bulbous bows was mainly responsible for the total resistance coefficients of KCS in short waves. A phase diagram of contribution of hull pressure to the total resistance coefficients disclosed that the phase of representing the maximum resistance in time history played an important role in the effect of trim conditions on ship resistance of KCS in short waves.

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References

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