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

The Society of Naval Architects of Korea (대한조선학회)
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Roll Damping Moment of a Small Fishing Vessel by Free Rolling Test in Calm Water

평수중 자유 횡동요 시험에 의한 소형어선의 횡동요 감쇠모멘트에 관한 연구

  • 전호환 (부산대학교 조선해양공학과(기계기술연구소)) ;
  • 천승현 (부산대학교 조선해양공학과 대학원) ;
  • 김시영 (부경대학교 제어기계공학과)
  • Published : 2000.02.01
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Abstract

The roll damping characteristics of the three models of a 3 ton class fishing vessel such as the bare hull, hull with bilge keels, and hull with bilge keels and a central wing are investigated by the free roll tests in calm water in a towing tank with the variations of the forward speed, initial angle and OG. The experimental results are compared with the numerical results of mathematical modellings by the energy method for these three models and the energy dissipation patterns are also compared.

3톤급 소형어선의 나선, 빌지킬 및 중앙날개(central wing)가 부착된 상태의 3가지 모델에 대해 평수중에서 속도 변화, 초기각의 변화 및 OG(무게중심과 횡동요 중심간의 거리)의 변화에 따른 횡동요 감쇠시험에 의해 감쇠특성을 비교하였다. 또한 에너지법에 의해 선형 및 비선형속도항에 의존하는 횡동요 감쇠모멘트를 수식화하여 시험값과 비교하였으며 3가지 모델에 대한 에너지 발산 형태도 비교하였다.

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References

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