加装舭龙骨对千吨级深V船型静水阻力和横摇运动的影响  

Effects of bilge keel on a one-thousand-ton deep-vee monohull with calm water resistance and rolling motion

作　　者：傅江妍[1] 陈炜[1] 葛慧晓[1] 陈韬颖[1] 

机构地区：[1]中国舰船研究设计中心,上海201108

出　　处：《中国舰船研究》2015年第5期22-26,共5页Chinese Journal of Ship Research

摘　　要：为改善深V船型在低速下的横摇,以千吨级深V船型为研究对象,研究在其舯部减摇鳍前、后位置加装舭龙骨对其静水阻力和横摇运动的影响。首先,通过数值模拟计算对深V船型无舭龙骨方案、加装舭龙骨的各个方案的耐波性进行比较,掌握舭龙骨距离折角线不同安装位置和不同舭龙骨宽度对深V船型横摇运动的影响。然后,根据数值计算结果考虑工程可实施性,以大舭龙骨宽度、等舭龙骨面积及不同安装角度设计这3个舭龙骨方案完成横摇衰减试验并优选出1个舭龙骨方案。最后,对该优选方案开展静水阻力试验和不规则波中的运动响应试验。试验结果表明,千吨级深V船型加装舭龙骨后,其静水阻力增加量不大于5%,减摇效果达30%以上。Deep-vee monohull can offset the wave strength at the bottom of the hull, increasing the pitchdamping and improving the pitch, surge, and vertical acceleration, reducing the slamming and deck wet-ness, all of which lead to better longitudinal sea-keeping performance. However, the roll at slow speed doesnot show any significant improvement. Aiming at the problem, fixing a bilge keel onto the middle part of thedeep-vee monohull could improve the seakeeping performance, especially the roll of the ship in waves. Inthis paper, a one-thousand-ton deep-vee monohull＇s hydrodynamic performances with different bilge keelprojects are numerically simulated, which guides the design of bilge keel projects for model tests. Then,three actual projects are designed for model test, whose results of seakeeping model tests reveal that thebest project has a resistance performance increment less than 5%, and the seakeeping performance, especially the roll of the ship, has a 30% improvement.

关 键 词：深V船型 舭龙骨 耐波性 船舶阻力 

分 类 号：U661.32[交通运输工程—船舶及航道工程]