首页 | 本学科首页   官方微博 | 高级检索  
   检索      

小水线面双体船横摇阻尼特性数值与试验研究
引用本文:孙小帅,姚朝帮,叶青.小水线面双体船横摇阻尼特性数值与试验研究[J].国防科技大学学报,2017,39(6):71-78,142.
作者姓名:孙小帅  姚朝帮  叶青
作者单位:海军工程大学 舰船工程系,海军工程大学 舰船工程系,海军工程大学 舰船工程系
基金项目:国家自然科学基金资助项目(50879090,51509256);水动力重点基金资助项目(9140A1403071251311044)
摘    要:针对安装稳定鳍的小水线面双体船开展了零速静水自由横摇衰减数值与试验研究。通过不确定度分析验证数值计算方法的可靠性,进而对比船体的线性横摇阻尼和非线性横摇阻尼,并分析摩擦阻尼和稳定鳍对小水线面双体船横摇恢复力矩的影响规律。结果表明:由数值计算求得的自由横摇衰减曲线与试验结果吻合良好;在线性横摇运动假设下,线性横摇阻尼系数随着初始横倾角的增加而增大;将通过数值计算求得的非线性阻尼系数代入到非线性横摇运动方程中能准确地模拟船体的自由横摇衰减运动;摩擦阻尼和稳定鳍对小水线面双体船零速静水自由横摇时的横摇恢复力矩贡献很小。

关 键 词:小水线面双体船  横摇阻尼  横摇自由衰减  RANS
收稿时间:2016/7/13 0:00:00
修稿时间:2016/9/22 0:00:00

Numerical and Experimental Investigation on Roll Damping of SWATH
SUN Xiaoshuai,YAO Chaobang and YE Qing.Numerical and Experimental Investigation on Roll Damping of SWATH[J].Journal of National University of Defense Technology,2017,39(6):71-78,142.
Authors:SUN Xiaoshuai  YAO Chaobang and YE Qing
Institution:Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, China,Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, China and Department of Naval Architecture Engineering, Naval University of Engineering, Wuhan 430033, China
Abstract:A Small Waterplane Area Twin Hull (SWATH) installed with stabilizing fins rolling freely in calm water was investigated by both numerical approach and experimental method. Uncertainty analysis was made to verify and validate the numerical method. Both linear roll damping and nonlinear roll damping were obtained and the contribution of viscosity and the stabilizing fins to the roll restoring moment were analyzed. The results illustrates that the numerical free roll decay curve are in good agreement with the experiment. Under the assumption of linear roll mode, the linear roll damping coefficient sees an upward trend with the increase of initial heel angle. Computed free roll decay curves using nonlinear damping coefficients agrees well with the experimental results. Frictional damping and the stabilizing fins make minimal contributions to the roll restoring moment for the free roll decay motion in still water.
Keywords:SWATH  roll damping  free roll decay  RANS
本文献已被 CNKI 等数据库收录!
点击此处可从《国防科技大学学报》浏览原始摘要信息
点击此处可从《国防科技大学学报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号