不同纵摇角速度下救生艇人水运动特性的数值研究

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Numerical Research on Water Entry Dynamics of Lifeboat under Different AngularPitch Velocities

DAI Qiguo'，LIU Yongtao²， SUN Guozhi¹， CAO Honglin'（1.JiangxiJgidtda;suesityieedog）

Abstract： Considering water entry of lifeboat in shalow-water areas，the numerical models are established. Focusing on angular pitch velocityduring lifeboat water entry，the research is conducted with given initial positions， velocities and pitch angles.And three numerical cases are determined considering three clockwise angular pitch velocities.The disciplines are studied on lifeboat velocities，displacements and trajectories.And the maximum depth values oflifeboat water entryareobtained Theresults showthat the pitch angleoflifeboat water entry increases with the increasing ofthe angular pitch velocities，esulting in conclusions drawn： 1）considering maximum depth values of water entry at the bow point cover 61.14% 0 70.91% and 82.61% of its length respectively; 2）the depths of water entry reach the peak value at the bow point， and the bow grounding is avoided.

Key words：lifeboat;pitch；water entry

1 引言

随着全球航运业的迅速发展，海难事故频繁发生。（剩余6346字）