船舶在迎浪中运动响应和波浪增阻的RANS数值模拟  

Motion response and added resistance of ship in head waves based on RANS simulations

作　　者：沈志荣[1] 叶海轩[1] 万德成[1] 

机构地区：[1]上海交通大学船舶海洋与建筑工程学院海洋工程国家重点实验室,上海200240

出　　处：《水动力学研究与进展（A辑）》2012年第6期621-633,共13页Chinese Journal of Hydrodynamics

基　　金：国家自然科学基金项目(11072154;50739004);海洋工程国家重点实验室自主研究课题基金(GKZD010059);上海东方学者人才计划基金(2008007);劳氏船级社教育基金会(The Lloyd's Register Educational Trust)赞助下的"伦敦大学学院(UCL)-上海交通大学-哈尔滨工程大学联合研究中心"资助~~

摘　　要：该文利用naoe-FOAM-SJTU求解器计算分析了Wigley Ⅲ型船模在迎浪中的运动响应。naoe-FOAM-SJTU求解器是基于开源代码OpenFOAM工具箱和数据结构,专门面向船舶与海洋工程复杂水动力学问题而开发的求解器。采用的控制方程为RANS方程,用有限体积法进行离散,采用VOF方法和动网格方法分别处理两相流界面和船体运动,运动响应是通过求解六自由度刚体运动方程得到。计算算例为三个航速和不同波长下Wigley Ⅲ型船模垂荡和纵摇的运动响应,以及波浪增阻,计算结果和试验值吻合较好。此外,还计算了Wigley Ⅲ型船模大幅度运动的算例,用于验证naoe-FOAM-SJTU求解器处理强非线性问题的能力,在该算例中,观察到了明显的非线性特征和严重的甲板上浪现象。This research applies the CFD solver naoe-FOAM-SJTU to simulate the motion response ofWigley III model in head waves. The naoe-FOAM-SJTU solver is developed under the framework of the open source package OpenFOAM for hydrodynamic problems of naval architecture and ocean engineering, in which the RANS equations are discretized by finitevolume method, the surface interface is captured by VOF method and motions of ship is handled by dynamic deformation mesh approach. The response of ship motions is obtained by 6DOF rigid-body equations. In this paper, three speeds of model ship and different head waves with a wide range of wave lengths are considered. The computational results, including motion response and added resistance, are compared with experiments. The comparison shows fair agreements. In addition, this paper presents an additional case with extreme wave height and large-amplitude motion to test the ability of this simulation for treating strong nonlinear problem. In this case, obvious nonlinear properties and severe green water on deck are observed.

关 键 词：六自由度动 耐波性 波浪增阻 naoe-FOAM-SJTU求解器 OPENFOAM 

分 类 号：U661.1[交通运输工程—船舶及航道工程]