论纵流船型的设计

On Design of the Buttock Flow Shipform

本文讨论了纵流船型的优越性及存在的问题,提出了设计要点。实践证明,纵流船型在速度较高时具有良好的消浪和减阻性能,也有较好的稳性及操纵性,但在超载、纵倾和风浪较大时阻力增加显著,而且在结构强度和轴系设计等方面尚存在着不可忽视的弱点。设计纵流船型应正确选择纵流角,压浪高度和首部水线面系数等参数。本文提出的经验公式及取值范围可供参考。

This paper shows you the advantages of the buttock flow shipform, its unsolved problems and the important points in the design. Practice has proved when speed is higher this shipform possesses the better properties of wave-height and resistance reduction as well as good stability and maneuverability. But when overloading and longitudinally inclining or in rough sea, the resistance will increase greatly. And there are still some considerable weak points on the strength of construction and the design of shafting, etc. In designing the buttock flow shipform, such parameters as the angle of the buttock flow, the height of wave-pressing and the waterplane coefficientof the forebody waterline, etc. The empirical formulae and the values selected in this paper might beused for your reference.