Abstract: High-speed displacement vessels can reduce resistance and increase speed by installing a reasonable bulbous bow. This paper takes the bulbous bow of a high-speed vessel as the research object. Without changing the total length of the vessel, this paper aims to optimize the hull resistance near the design speed by designing a new drag-reducing bulbous bow. First, based on the original bow lines, the lines of the bulbous bow are adjusted by altering the local characteristics of the bulbous bow. Then, using numerical calculation methods, numerical simulations of the bow wave-making, hull resistance, and hull attitude are carried out to compare and determine the optimal form of the new drag-reducing bulbous bow. Finally, based on the analysis and comparison of multiple schemes, the design parameters of such bulbous bows are summarized to provide a reference for the bulbous bow line design of high-speed displacement vessels.

Key words: displacement vessels, bulbous bow, resistance performance, computational fluid dynamics (CFD), wave-making interference

摘要： 高速排水型船舶通过设置合理的球鼻艏可起到降低阻力、提高航速的作用。该文以某高速船的球鼻艏为研究对象,在不改变船舶总长的基础上,通过设计一型新型减阻球鼻艏以优化设计航速附近的船体阻力性能。首先,基于原船首部型线,通过改变球鼻艏的局部特征,调整得到球鼻艏区域的型线;然后,利用数值计算方法,对修改后船体的艏部兴波、船体阻力及姿态进行仿真计算,对比分析得出较优的新型减阻球鼻艏形式;最后,基于多方案分析比较,总结归纳出此类球鼻艏的设计参数,为高速排水型船舶球鼻艏型线设计提供参考。

关键词: 排水型船, 球鼻艏, 阻力性能, 计算流体力学, 兴波干扰