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The tank sloshing problem is very important at design time in LNG/LPG ships. This problem causes impulsive loads to ship structures and is often treated as a non-linear one. In order to estimate these impulsive loads, properly many studies have been carried out through both experimental and numerical approaches. Impulsive pressure on the wall of a tank induced by forced multi-degree oscillations is focused in this research. It is shown in the past authors’ experiment that forced multi-degree oscillations cause stronger impulsive pressure as compared to individual oscillations. Numerical analysis by a particle method based on finite volume technique is introduced in this study to simulate the above phenomena. The suggested particle method is shown to be useful for simulating a strong nonlinear phenomenon. The authors discuss the calculated results of pressure time history with the experimental results.

Sloshing simulation of a tank oscillating towards multiple degrees of freedom by particle method