五体船兴波阻力预报和减阻设计遗传算法  

Numerical Calculation of the Wave Resistance and the GA-Based Resistance Reduction Design of Pentamarans

作　　者：谢扬[1] 卢晓平[1] 

机构地区：[1]海军工程大学舰船工程系,湖北武汉430033

出　　处：《中国舰船研究》2013年第4期20-26,41,共8页Chinese Journal of Ship Research

基　　金：国家部委基金资助项目

摘　　要：以线性兴波阻力薄船理论Michell积分和科钦函数线性叠加原理为基础,采用正交切比雪夫多项式拟合片体横剖面面积曲线,得出单体船、三体船和五体船通用的线性兴波阻力数值计算公式。据此,对不同侧体位置布局的Wigley五体船算例的兴波阻力进行系统的计算,并分析侧体位置布局对五体船兴波阻力的影响规律。在此基础上,进一步应用遗传算法对五体船的侧体位置布局进行减阻设计,得到五体船在计算航速下的侧体位置布局减阻设计方案。研究表明,所提五体船兴波阻力线性理论算法以及侧体位置布局减阻设计遗传算法均有效可行。Based on the Michell integral method of the thin ship linear wave resistance theory, the linear superposition principle of the Cochin function, and the curve fitting with orthogonal Chebyshev polynomial, this paper derives the general numerical formula for the linear wave resistance of monohulls, trimarans and pentamarans. Bases on the formula, the wave resistance of Wigley pentamaran samples under different outrigger arrangement configurations is calculated, and the influences of the outrigger arrangement on the wave resistance is analyzed. Moreover, by employing the genetic algorithm together with the derived formula, an optimization on the outrigger arrangement design is carried out to reduce the wave resistance at required traveling speeds. Simulation results show that both the wave resistance formula and the corresponding optimization scheme are effective and feasible in engineering applications.

关 键 词：五体船 线性兴波阻力 切比雪夫多项式 遗传算法 

分 类 号：U661.311[交通运输工程—船舶及航道工程]