基于CFD的一种无压载水船阻力数值模拟  

Resistance Numerical Simulation of a Ballast-free Ship Type Based on CFD

作　　者：洪碧光[1] 王鹏晖[1] 于洋[1] 高孝日[1] 

机构地区：[1]大连海事大学航海学院,辽宁大连116026

出　　处：《船舶工程》2016年第7期15-20,共6页Ship Engineering

摘　　要：为解决船舶压载水问题,在无压载水船设计理念贯通流系统的基础上,利用连通管路对其进行改造,提出一种船舶无压载水化新思路。同时,以系列60船型改造后的新船型作为研究对象,基于CFD方法,选用混合网格和RNG k-ε湍流模型对其进行阻力数值模拟,利用黏性流对叠模求解。为验证网格划分和数值方法的合理性,首先,对系列60船型进行数值模拟,计算结果与传统试验数据基本吻合。然后,对新船型进行阻力数值模拟,并将其与系列60船型的阻力数据进行比较分析。结果表明,新船型降低了船舶阻力,优化了水动力性能。To solve the problem of ballast water, based on a ballast-free design concept though flow system, using connectivity pipes to transform it, it presents a new scheme of ballast-free design. Meanwhile, new ship transformed by series 60 ship is taken as an example, based on CFD, to make numerical simulation by using hybrid grid and RNG k-ε turbulence model, and solved resistance of double-model in turbulence flow theory. To test the validity of the grid generation and numerical analysis method, the simulation of series 60 is firstly carried out, and the result is in good agreement with traditional experimental data. Then, the resistance numerical simulation of new ship is carried out, and the resistance data of series 60 and new ship in different operating condition are compared and analyzed. The result shows that new ship reduces ship＇s resistance and optimizes hydrodynamic performance.

关 键 词：无压载水船 贯通流系统 系列60船型 数值模拟 阻力 

分 类 号：U662.2[交通运输工程—船舶及航道工程]