摘要
介绍了当前国内外市场需求量较大的船舶品种之一--7万吨成品油船的船体线型优化设计,共进行了两次优化设计（艏部改型和艉部改型）,派生出三个不同的船型方案,其中包括两个不同的球艏和两个艉线型方案.船模试验结果表明：在设计航速处,改型方案2较方案1（原型）的兴波阻力下降21%,在较大的航速范围内其有效功率下降4.5%～1.9%,推进效率提高2.5%;而改型方案3则较方案1（原型）的兴波阻力下降30%,其有效功率下降5.7%～3.1%,推进效率提高2.6%.将其与现有同类船型的性能进行了比较,证明该船的最终船型方案是优秀的,改型是成功的.同时,本文也结合近代大方形系数船舶的船型特点,就艏艉线型变化对船舶阻力及推进性能的影响（特别是对船舶快速性能影响较大的横剖面形状、浮心位置、设计水线以及球艏形状）也进行了较为详尽的分析,提供了某些较佳尺度及参数范围以供设计人员参考.
The hull lines optimization design on 70000 tonner product oil tanker, which is the most demanded in modern ship type maket, is introduced in this paper. By means of two modified designs （modified bulb bow and modified stern）, three different projects of ship type are obtained. Among the projects two different projects of bulb bow and two different projects of stern lines are included. From the model test result, compared with project one （initial project）, the wave resistance of project two is reduced by 21% at the design speed, the effective power is reduced by 4.5 ～1.9% and the propulsion efficiency is increased by 2.5% in all area of speed. However, compared with project one, the wave resistance of project three is reduced by 30%, the effective power is reduced by 5.7%～3.1% and the final propulsion efficiency is increased by 2.6%. It is proved that the project three recommended by authors is better than the initial ship type and is satisfactory.
At the same time, combined with the characteristics of large block coefficient ship, the detail analysis of the influence on resistance and propulsion performance due to the change of ship lines is carried out. Especially selective range of some factors such as the transverse section form, longitudinal center of buoyancy, form of design draught area and bulb bow which will exert an influence on the speed and power of ship, is provided for reference.
出处
《中国造船》
EI
CSCD
北大核心
2006年第2期114-119,共6页
Shipbuilding of China
关键词
船舶、舰船工程
油船线型优化
船舶阻力
船舶推进
ship engineering
oil tanker lines optimization
ship resistance, ship propulsion
