Motion Simulation of Falling Bodies During Water Entry : Basic Study With Cylinders

概要

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Prediction of the behaviour of free fall bodies during water entry is very important in the field of naval architecture and ocean engineering. Motions of free fall life boats and dropping pipes from offshore platforms are typical examples of this phenomenon. In this study the analytical technique for predicting the falling motion of the cylindrical bodies including water impact on them has been presented by solving the motion differential equations in the time domain. A computer program has been developed to simulate the submerged trajectory of such bodies and verified the accuracy of the program with experimental results. Trajectory simulations have been conducted using simple body shapes, like circular and rhomboidal cylinders, for different dropping and environmental conditions. Several numerical studies have been carried out to determine the key parameters which influence the trajectory and motion of the falling bodies.
社団法人日本船舶海洋工学会の論文
1994-09-25