一种实用船型设计方法

介绍船型设计中对兴波阻力影响最大的两个因素--横剖面面积曲线和球鼻首的设计方法.20年间,结合实用船型的特点,采用该方法研发出一种对中高速船行之有效的船型设计程序,并先后对四种具有完全不同尾型的实用船型进行优化设计,即1984年完成的球首长轴套新船型、1988年完成的球首蜗尾新船型、1992年完成的球首双尾新船型、2002年完成的球首常规尾沿海客滚船新船型,都取得了良好的消波、减阻与节能效果.在设计航速下,与各自的对比船型相比较,四种新船型均大幅度减小兴波阻力,减小剩余阻力20%以上,节省有效功率分别为16.2%、5.5%、5.8%、10.3%.

A Practical Design Method of Ship Form

This paper presents the design method for sectional area coefficient curve and bulbs bow which are of great influence in hull form design with regard to wavemaking resistance. For 20 years, four types of practical ship form with different stern shapes have been designed based on this design method, i. e. the inland vessel with bulbous bow and large sleeve bossing designed in 1984, the inland passenger vessel with bulbous bow and cochlea-channeled stern designed in 1988, the inland touring vessel with bulbous bow and catamaran stern designed in 1992 and the ro-ro ship with bulbous bow and twin skegs designed in 2002. The foregoing four types of practical ship form have got the good performance results of reducing wavemaking, reducing resistance and saving effective power. Compared with corresponding mother ship, under the design speed, the newly designed ships will highly reduce wavemaking resistance, will decrease residuary resistance by more than 20%, will save effective power by 16.2%, 5.5%, 5.8%, 10. 3% respectively.