穿浪双体船剩余阻力影响因素分析及总阻力预报方法

Influencing factors of residual resistance and a prediction method of total resistance about wave-piercing catamaran

文章在30～60米级穿浪双体船系列模型试验研究和实船设计的基础上,对影响穿浪双体船剩余阻力的相关因素进行分析。其中片体瘦削系数L/△1/3、片体间距比K/b和艉扰流板深度h对于穿浪双体船的剩余阻力影响显著,实船设计中存在最佳状态。文中对模型试验数据进行分析整理,绘制了不同片体间距比下的剩余阻力系数图谱,提出了一种基于模型试验的穿浪双体船总阻力预报方法,计算实例表明该方法在设计初期缺少模型试验的情况下,能够较准确、高效地预报穿浪双体船的总阻力,对穿浪双体船参数的优化和快速性预报有一定的工程实用价值。

Upon series of model test and researching of ship design about 30～60m wave piercing catamarans（WPC）,the influencing factors of residual resistance are presented.L/Δ1/3,K/b and the height of stern interceptor are important in these factors for the resistance of WPC and have optimization value for ship design.Some diagrams about residual resistance at different distances of demi-hulls and a prediction method of total resistance about WPC are put forward.The calculation of an example shows that this method can predict the total resistance of WPC exactly and has high efficiency.It is dependable for optimization of influencing factors of residual resistance and prediction of ship speed.