船艏新型附体减阻减纵摇的数值计算及模型试验研究  

Numerical calculation and model experiment study on drag reduction and pitching reduction of appendage

作　　者：赵港全 刘志华[1] 刘文涛 ZHAO Gang-quan;LIU Zhi-hua;LIU Wen-tao(College of Ship and Ocean,Naval University of Engineering,Wuhan 430033,China)

机构地区：[1]海军工程大学舰船与海洋学院,武汉430033

出　　处：《船舶力学》2022年第11期1611-1623,共13页Journal of Ship Mechanics

基　　金：装备发展部预研领域基金项目(6140241010101)。

摘　　要：为了减小高速船舶运动阻力和在波浪中的运动响应,本文提出一种可以抑制船舶艏部兴波、增大船体在波浪中纵摇运动阻尼的新型三维船艏附体技术。以某高速船为研究对象,在原有的船艏平板附体基础上,根据船模在0.41、0.45、0.494三种弗劳德数下的船艏兴波现象模拟计算结果,进行新型三维船艏附体的设计。数值计算结果显示,在弗劳德数为0.41~0.494高航速范围内新型附体具有减阻效果。同时,进一步计算船体在六种规则波中的纵摇运动响应,计算结果显示,加装新型船艏附体的船模具有减小船体在波浪中纵摇幅值的效果。在此基础上,利用高速船模拖曳水池进一步开展加装新型船艏附体的船模减阻减摇效果的模型试验,试验结果表明,加装新型船艏附体的船模在弗劳德数为0.45时阻力减小10.6%;在弗劳德数为0.41、船长波长比为1时,垂荡幅值、纵摇幅值分别减小38.07%、48.14%。本文的研究为进一步改善船舶阻力性能和耐波性提供了新的技术途径。In order to reduce the resistance and motion responses of high-speed ships in waves,a new three-dimensional bow appendage technology was proposed,which can suppress the fore wave and increase the damping of ship's pitching motion in waves.Taking a high-speed ship as the research object,a new three-di⁃mensional bow appendage was designed based on the original two-dimensional plate appendage and the sim⁃ulation results of fore wave at the Froude numbers of 0.41,0.45 and 0.494.The numerical calculation results show that the new appendage can reduce the resistance of ship model at the high-speed range of Froude num⁃ber from 0.41 to 0.494.The pitching motion responses of the hull in six regular waves were further calculated.The results show that the new bow appendage can reduce the pitching amplitude of the hull in waves.On this basis,the model experiments of the drag reduction and the pitching reduction of ship model with the new bow appendage were further carried out by using the high-speed ship model towing tank.Experiment results show that the resistance of ship model with the new bow appendage can be reduced by 10.6%at the Froude num⁃ber of 0.45.When the Froude number is 0.41 and the ratio of ship length to wave length is 1,the heave ampli⁃tude and pitching amplitude decrease by 38.07%and 48.14%respectively.The research in this paper pro⁃vides a new technical approach to further improve the resistance performance and seakeeping of ships.

关 键 词：新型三维船艏附体 减阻减摇 高航速 数值计算 模型试验 

分 类 号：U661.1[交通运输工程—船舶及航道工程]