船舶首部相对运动及甲板上浪的预报

PREDICTION OF RELATIVE MOTION AND DECK WETNESS AROUND SHIP BOW

本文以一艘高速船为研究对象,进行各种航行状态下的相对运动系列试验,并测定其在不规则波中船首甲板上浪频率。通过试验数据的分析和拟合,给出了计算船首相对运动升高系数的关系式。文章还对船首相对运动和甲板上浪进行理论计算,计算中引入了船体水线以上形状对甲板上浪的影响,预报结果与试验值吻合良好。

Various kinds of experiments were carried out for the investigation of the vertical relative motion of the water surface along the bow of a highspeed ship,and measurements of deck wetness frequency in irrgular waves were made.Based on the analysis and curve fitting technique of the experimental results,this paper presents an empirical formula for evaluating the bow“Swell-up Ceofficient”.Relative motions and deck wetness around the bow are also predicted with theoretical calculation in consederation of effects of above-water bow shape.The agreement between the prediction and experimental data is satisfactory.