Study on ship roll damping

摘要：

　　Numerical simulations of the free roll decay have been carried out for the DTMB 5512 with/without bilge keels based on computational fluid dynamics by adopting the overset mesh technology.Free roll decay curve from numerical simulation coincides quite well with that from experiment given Fr=0.138, and initial roll angle θ0 =10°, the natural period and the roll damping of the ship are well predicted.Moreover, the influences of bilge keel width, initial roll angle and speed on roll damping are discussed, respectively.Besides, numerical simulations of forced roll have been performed for a trimaran to explore the influence of frequency on roll damping.The results show that the roll damping increases with bilge keel width, initial roll angle, speed and frequency.

关键词： free roll decay forced roll overset mesh technology roll damping trimaran

作者: Yin Jiang Renchuan Zhu Guoping Miao Liang Hong Chao Ma

作者单位: Innovation Center for Advanced Ship and Deep-Sea Exploration, Shanghai 200240, China

会议类型: 国际会议

会议名称: The Second Conference of Global Chinese Scholars on Hydrodynamics(第二届全球华人水动学学术会议)

会议地点: 江苏 无锡

会议语种:英文

页码: 722-729

在线出版日期: 2016-11-11（万方平台首次上网日期，不代表论文的发表时间）