一种实用船型设计方法(2)--特殊船尾及其推进性能分析

介绍了四种具有完全不同尾型的实用双桨船型的优化设计结果,即双球尾船型、蜗尾船型、双尾船型、双尾鳍沿海客滚船船型,都取得了很好的推进性能与节能效果.在设计航速下,与各自的对比常规双桨船型相比较,提高推进效率分别为15%以上,20%以上,10%左右,8～10%.文中亦对特殊船尾的推进性能与螺旋桨设计作了初步分析.

A Practical Design Method of Ship Form (2)--Special Stern Shapes and Their Propulsive Performance

This paper introduces four types of practical twin-screw ship form with different kinds of stern shapes, i. e. the twin-bulb stern, cochlea-channeled stern, catamaran stern and twin skegs stern. Four types of the special stern shapes have got the good propulsive performance and results of saving of machine power. Under the design speed, the propulsive efficiencies of the special stern shapes will be increased by more than 15%, 20%, 10%, 8-10% compared with corresponding mother ship respectively. The propulsive performance and design of propeller for the special stern shapes are discussed in this paper.