摘要
基于三维势流理论并考虑黏性阻尼,计算某斜支柱小水线面双体(I-SWATH)船在波浪中的运动响应.与常规直支柱小水线面双体船和代尔夫特372双体船进行对比,I-SWATH船具有更好的耐波性能.以此为基础,充分考虑黏性条件,通过求解雷诺平均Navier-Stokes方程并结合重叠网格方法,进一步研究该I-SWATH船在静水及规则波中的阻力性能及运动响应.计算结果表明:I-SWATH船存在波浪增阻为负值的情况,并获得了在某种程度上倾斜支柱能够利用波浪能量的结论.
An unconventional small water-plane area twin-hull(SWATH) ship with inclined struts was investigated by numerical methods. The seakeeping performance was studied firstly based on the three-dimensional potential flow theory with considering viscous damping. The results show that the SWATH ship with inclined struts demonstrates improved seakeeping performances by comparison with a vertical-strut SWATH ship and the Delft 372 catamaran. Fully considering the viscous condition, 3 D numerical simulations based on the Reynolds-averaged Navier-Stokes(RANS) equation and overset mesh method are carried out both in calm water and head regular waves. As negative added resistance is observed in the computational results, it can be concluded that the inclined struts could make use of wave energy to give rise to a reduction of power required in waves.
作者
毛立夫
李英辉
易宏
MAO Lifu;LI Yinghui;YI Hong(Ministry of Education Key Laboratory of Marine Intelligent Equipment and System;State Key Laboratory of Ocean Engineering;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai Jiao Tong University,Shanghai 200240,China)
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2019年第12期1428-1439,共12页
Journal of Shanghai Jiaotong University
基金
海洋工程国家重点实验室自主研究课题(GKZD01007)
关键词
小水线面双体船
斜支柱
黏性阻尼
雷诺平均Navier-Stokes方程
运动响应
波浪增阻
small water-plane area twin-hull(SWATH) ship
inclined struts
viscous damping
Reynolds-averaged Navier-Stokes(RANS)
motion response
added resistance in wave
