摘要
针对深V船型在静水中零速工况下减横摇的需求,分别以某母型船的光体、加装舭龙骨和采用双折角线三种设计方案开展了船体静水自由横摇运动的数值模拟和横摇阻尼的数值预报研究。由于船舶的横摇运动受流体粘性的影响十分显著,准确预报船体的横摇阻尼必须计及粘性阻尼成分的因素。论文提出了一种将能量法和RANSE方程相结合的数值模拟方法,对比分析了三种船型方案的船体自由横摇特性,阐述了减横摇设计对线性和非线性横摇阻尼的影响规律。
Based on the ship motion of free roll decay in calm water ,the purpose of present paper is to provide a method to estimate the roll damping ratio for three kinds of deep‐V hulls including the bare hull ,hull with bilge keel and hull with double chine lines .As the viscous effect is a notable factor in the roll motion ,the proposed method should take the viscous damping components into account ,which is combined with the energy method and RANSE simulation .The comparison anal‐ysis of free roll motion characteristics is carried out for three kinds of hull forms and the relationship of anti‐roll design to the linear and nonlinear roll damping components is conducted .
出处
《舰船电子工程》
2015年第9期171-175,共5页
Ship Electronic Engineering
关键词
深V船型
横摇阻尼
能量法
RANSE
deep-V hull
roll damping
energy method
RANSE
