中文摘要：

为实现船体型线的优化,在船型NURBS表达的基础上,提出2种基于CAD/CFD船型优化流程的不同参数化建模方法.一种是直接以NURBS的控制顶点坐标为变量,实现船型的参数变换;另一种是以母型为基础开发船型参数化融合模块,实现船型的参数变换.利用iSIGHT软件,采用这2种参数化建模方法优化某集装箱船球鼻首部分.结果表明：船型修改融合方法是具有工程实用价值的参数化建模方法.

英文摘要：

To implement the optimization on hull form lines,two different parametrization modeling methods of hull form optimization flow based on CAD/CFD are proposed according to NURBS description of hull form.One method is used to directly control vertices coordinates as the variables to realize hull form parameter transformation;another method is used to develop hull form parametrization morphing module based on parent hull form to achieve hull form parameter transformation.By using iSIGHT,the two kinds of parametrization modeling methods are used to optimize bulbous part of a container ship,and the result indicates that the hull form morphing method is a parametrization modeling method with practical value in engineering application.