数值波浪水池中航行船舶绕射问题的数值模拟  

Numerical Simulation of Diffraction Problems of Moving Vessels in Numerical Wave Tank

作　　者：方昭昭[1,2] 朱仁传[1] 缪国平 龚丞[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 [2]中国船舶重工集团公司第701研究所,武汉430064

出　　处：《上海交通大学学报》2012年第8期1203-1209,1217,共8页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金资助项目(50639020);国家高技术研究发展计划(863)项目(2006AA09Z332)

摘　　要：基于计算流体力学(CFD)方法建立了数值波浪水池(NWT),并对波浪生成传播和波浪中航行船舶波浪绕射问题进行了数值模拟.讨论了适合航行船舶绕射现象模拟的波浪环境表达,验证了参考坐标系下NWT中波浪生成、传播和消波等,模拟计算了多个航速顶浪和斜浪航行的拘束Wigley-III船模在不同波长的规则波中运动时所受的波浪力(矩).通过与势流理论结果和DelftUniversity of Technology(DUT)试验结果的比较显示,NWT方法计算的结果与两者的结果吻合良好;比实验更易实现和控制;能描述船舶周围的流场,在船舶水动力性能的分析和运动预报等方面具有广阔的应用前景.Numerical simulations of diffraction problem of Wrigley-III advancing with certain forward speeds were carried out in the numerical wave tank （NWT）, which is established based on computational fluid dynamics（CFD） method. Regular waves making and propagation were simulated and verified in a ref- erence coordinate system. Wave forces of the retrained Wigley-Ⅲ advancing in both heading and oblique waves were computed respectively in NWT. Comparison of the present results, the corresponding ones of potential flow theories and experimental one from Delft University of Technology, was made. It shows they agree well each other. The proposed method is of great significance to further analyze and predict hy- drodynamic performance of ship and marine floating structures in waves.

关 键 词：数值波浪水池 绕射问题 计算流体力学 波浪力 

分 类 号：U661.1[交通运输工程—船舶及航道工程]