Journal of the Korean Institute of Navigation (한국항해학회지)
- Volume 10 Issue 2
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- Pages.139-155
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- 1986
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- 1225-0481(pISSN)
A study on the Motions of a ship with Liquid Cargo Tanks
화물창의 유체유동을 고려한 선체운동에 관한 연구
Abstract
In this paper the dynamic effects due to the free water motions in tanks upon the lateral motion of a floating body in regular waves are calculated, in order to obtain the relationship between a motion of a floating body and that of the free water in tanks. Under the assumption that the fluid is ideal and motion amplitudes are small, velocity potential of the fluid in tanks is calculated by the source distribution method and the hydrodynamic forces and moments are calculated by the integration of fluid pressures over the tank surface. Hydrodynamic effects of the fluid on the floating body are expressed in terms of added mass and coupling coefficient obtained from the integration. Computations are carried out for ship with seven wide center tanks and comparisons between the liquid cargo loading case and the rigid cargo loading case are shown.
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