船体曲面几何表达及水动力性能计算的NURBS方法  

NURBS method for surface geometrical expression and hydrodynamicperformance calculation of ship hull

作　　者：张晓兔[1] 滕斌[1] 信书[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116024

出　　处：《海洋工程》2004年第2期7-12,共6页The Ocean Engineering

基　　金：国家杰出青年基金资助项目(50025924)

摘　　要：采用非均匀有理B样条(NURBS)对船体曲面形状进行几何表达,所生成的网格直接用于后续的有关船体水动力性能计算工作中。对Wigley船型的线性兴波阻力和斜航操纵运动的船体,结合近似的Kutta条件作了相应的数值计算,从与试验结果的比较来看,该方法具有较好的工程精度,对船舶及海洋工程领域中的计算机辅助设计(CAD)与计算流体动力学(CFD)之间的相互集成,具有推动与促进作用。This paper adopts the non-uniform rational B-spline(NURBS)to express the geometry of ship hull and the grids generated by the method are directly used in the calculation for hydrodynamic performance of hull.The wave-making resistance and maneuvering hydrodynamics of a Wigley ship at an attack angle with an approximate Kuta condition are numerically computed by using the present method.The comparison of experimental results,shows that the method has engineering precision and a positive effect for the mutual integration between computer aided design(CAD)and computational fluid dynamics(CFD)in the naval architecture and ocean engineering.

关 键 词：非均匀有理B样条 计算机辅助设计 计算流体动力学 水动力性能 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术] U661.3[自动化与计算机技术—计算机科学与技术]