三体船兴波阻力计算的自由面网格快速生成  

Fast free-surface mesh generation for the calculation of trimaran wave making resistance

作　　者：王中[1] 卢晓平[1] 王玮[2] 

机构地区：[1]海军工程大学船舶与动力学院,湖北武汉430033 [2]海军装备研究院舰船所,北京100073

出　　处：《哈尔滨工程大学学报》2010年第4期409-413,共5页Journal of Harbin Engineering University

基　　金：国防预研基金资助项目(9140A306JB11)

摘　　要：针对三体船Rank ine源计算方法的自由面网格快速生成问题,基于NURBS(非均匀有理B样条)曲线表达船体水线及自由面网格边界线,运用贴体坐标代数法生成自由面网格,开发了适用于三体船兴波阻力计算的自由面网格快速生成系统.该系统仅需输入必要的船体型值和几个控制参数即可快速生成三体船兴波阻力计算的自由面网格,并实现网格密度变化控制,避免了商用网格生成软件生成三体船自由面网格的繁琐过程,可用于带有方尾的三体船型自由面网格快速生成,提高了三体船兴波问题Rank ine源计算方法自由面网格划分效率.To generate a free-surface mesh quickly for trimaran wave making problems that are being solved with the three-dimensional Rankine source method,a fast free-surface mesh generation system was developed.The water lines of the tramaran hulls and the boundaries of the free-surface domain were expressed by NURBS curves.Using the methods and software presented,a free-surface mesh was generated quickly.It required only the waterline offset and significantly reduced control parameters.Using commercial software to generate such a mesh would require much greater effort.With the method presented,a free-surface mesh for the trimaran both with and without a transom stern could be generated very quickly.This enhanced efficiency when calculating trimaran wave making resistance with the Rankine source method.

关 键 词：兴波阻力 面元法 三体船 非均匀有理B样条 自由面网格 

分 类 号：U661.31[交通运输工程—船舶及航道工程]