非对称片体双体船的水动力性能研究

Study on the hydrodynamic properties of an asymmetrical catamaran

研究双体船舶阻力性能和片体间作用对船型的优化和设计具有重要意义。本文基于CFD软件Fluent,采用VOF方法,研究了不同瘦削系数的常规双体船和非对称片体组成的双体船水动力性能,分析了双体船2个片体间的干扰效应,以及非对称片体结构对优化双体船水动力性能的作用。通过某一小尺度船舶不同航速下的静水阻力模拟,验证了本文数值方法的有效性。研究发现非对称片体结构可以在一定程度上有效优化双体船水动力性能。本文研究结果可对双体船的外形设计及结构应力分析提供理论支持。

The study of the resistance performance and interference effect between catamaran demi-hulls is of great significance to the optimization and design of the vessel type.Based on the CFD software Fluent,the hydrodynamic performance of conventional catamarans with different thinning coefficients and the catamaran composed of asymmetrical demi-hulls is studied by the VOF method.The interference effect between two hulls of the catamaran and the effect of asymmetric demi-hull structure on optimizing the hydrodynamic properties of the catamaran are analyzed.Simulation of hydrostatic drag at different speeds of a small-scale vessel verifies effectiveness of the numerical method proposed in this paper.It is found that the asymmetrical demi-hull structure can effectively optimize the hydrodynamic performance of the catamaran to a certain extent.The results of this paper can provide theoretical support for the shape design and structural stress analysis of catamarans.