基于CFD的DTMB船舶艏部型线优化研究

Research on Optimization of bow lines of DTMB ship based on CFD

为实现船型的参数化变换,对径向基函数插值技术进行了改进,提出了一种基于型值点的船型变换方法。为验证该方法的实用性,将船型变换模块与CFD软件及遗传算法相结合,开发了基于CFD的船型优化平台,并对DTMB5415船型进行了减阻优化设计。结果表明:提出的基于型值点的径向基函数插值方法具有较好的工程实用价值。

In order to realize the parametric transformation of ship type,the radial basis function interpolation technique is improved,and a new method of ship type transformation based on offset points is proposed. In order to verify the practicability of the method,a ship type optimization platform based on CFD is developed by combining ship type transformation module with CFD software and genetic algorithm,and the resistance reduction optimization design of DTMB5415 ship type is carried out. The results show that the proposed radial basis function interpolation method based on offset points has good engineering practical value.