基于变换函数的船体曲面参数化修改技术研究.pdf

中国科技论文在线

基于变换函数的船体曲面参数化修改技术
研究#
胡春平,刘祖源,冯佰威**
5 (武汉理工大学交通学院,武汉 430063)
摘要:为实现基于 CFD 的船型自动优化,需要一种参数化的船体型线生成方法。该文改进
了一种基于变换函数的船型参数化方法,以使变换船型更丰富、合理,该方法可以通过改变
几个参数即可实现船体型线的自动生成。研究表明,只要选择合适的变换函数,参数的取值
10 范围合理,则可以保证变化后的船型仍然满足光顺性等特征。文中以 1300TEU 集装箱船和
戴维泰勒水池 DTMB5415 标模为例,阐述了基于变换函数的船体型线变换过程,结果表明,
基于变换函数的船型变换方法可以应用于船型精细优化中。
关键词:参数化;变换函数;NURBS 理论;光顺准则
中图分类号:
15
Parametric Ship hull form transformation based on
transformation function
HU Chunping, LIU Zuyuan, FENG Baiwei
(School of Transportation,Wuhan University of Technology,Wuhan 430063)
20 Abstract: To realize hull form automatic optimization Based on CFD, it needs a parametric
hullform generation method. A ship modified method based on transformation function is
improved in the article; this method can realize automatic generation of ship hull form only by
varying several parameters. Research shows that, as long as suitable for transformation function
by choice, and reasonable ranges of parameters, it can ensure the hull form still fairness and other
25 characteristics. Take two different types of hull form transformation of 1300TEU container ships
and DTMB5415 for example, it illustrates the process of hull form transformation based on the
transformation functions. The results indicate that, the hull form transformation method based on
the transformation funct