Lee, Y.B., Tan, M. and Temarel, P.
Coupling between ship motion and sloshing using potential flow
At 8th International Conference on HydroDynamics (ICHD'08).
30 Sep - 03 Oct 2008.
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In this paper, investigation of the coupled motions of a rigid ship with a partially filled tank is carried out, using potential flow analysis. The aim at this stage is to examine the appropriateness and short comings of two methods, namely a simple Green’s function using Rankine formulation, including the de-singularised approach, and the pulsating source Green’s function, in simulating the fundamental physical aspects of liquid sloshing. The hydrodynamic forces and moments associated with the liquid sloshing are represented by relevant added mass coefficients. Subsequently, the coupled equations of motion of ship-partially filled tank in regular waves is generated and responses evaluated. The aforementioned methods were applied to a barge equipped with a partially-filled tank. There is good agreement between the responses obtained by all numerical methods used. Comparisons with available experimental roll RAOs indicate that all methods used capture well the physical aspects of the effects of sloshing liquid on ship motions.
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