摘要
基于切片理论,先求解出船舶无横倾时在斜浪长峰不规则波中的垂荡和纵摇运动,确定出波面与船体的相对位置,再利用三个坐标系之间的转换关系,提出了任意斜浪长峰不规则波中船体各横剖面左右舷与波面一组或多组交点的求法及各浸水剖面面积的通用计算法;同时基于规则波复原力计算公式,提出了Froude-Krylov假说下的斜浪长峰不规则波中复原力计算公式。最后以一艘集装箱船为例,研究了其在斜浪不规则波中复原力变化,计算结果表明船-波相对位置是影响斜浪长峰不规则波中复原力变化的一个至关重要因素。
The relative position of ship to waves is determined with heave and pitch motions obtained by a strip theory applied to an upright hull.And then a general method for calculating one set or more intersections between ship and oblique long-crested irregular waves and instantaneous area wet sections is presented based on transform of three coordinate systems.The formula for calculating restoring moment in oblique long-crested irregular waves is presented based on the formula in regular wave.Finally,as a sample,the restoring moment of a container ship in oblique long-crested irregular waves is studied and the relative position of ship to waves is an essential fact for calculating restoring moment.
出处
《中国造船》
EI
CSCD
北大核心
2010年第3期11-18,共8页
Shipbuilding of China
基金
国家留学基金委的支持(NO.2008606031)
