基于CFD的无压载水船型浅水中岸壁效应数值模拟  

Numerical Simulation of Wall Effect for Ballast-free Ship in Shallow Water Based on CFD

作　　者：洪碧光[1] 王鹏晖[1] 张秀凤[1] 于洋[1] 

机构地区：[1]大连海事大学航海学院,辽宁大连116026

出　　处：《船海工程》2017年第2期6-11,共6页Ship & Ocean Engineering

基　　金：国家自然科学基金(51379026);河北省海事局科研项目(2015Z0541)

摘　　要：基于贯通流系统设计无压载水船型,在保证无压载水化的基础上,分析其操纵性相关的水动力特性,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SST k-ω湍流模型对船舶浅水航行的岸壁效应问题进行数值模拟,利用粘性流对叠模求解。为验证网格划分和数值方法的合理性,对系列60船型进行数值模拟,将计算结果与他人计算结果进行比较,基本吻合。对新船型进行数值模拟,计算出其在浅水中不同岸壁距离以及不同航速下的阻力、横向力和转艏力矩,与系列60船型的计算结果进行比较,分析结果表明,新船型弱化了浅水中的岸壁效应,优化了水动力性能。A ballast-free ship type was designed based on though flow system. On the basis of ballast-free, its hydrodynamic behavior about maneuverability was studied. The new ship transformed by series 60 ship was taken as an example, the CFD nu-merical simulation of wall effect in shallow water was carried out by using hybrid grid and SST turbulence model. To test the va-lidity of the grid generation and numerical analysis method, the simulation of series 60 was carried out, and the result was in good agreement with other numerical results. The numerical simulation of new ship was carried out, and the resistance, lateral force and yaw torque data of series 60 and new ship in different distance to bank and different velocity were compared and analyzed. The result showed that new ship reduces the wall effect in shallow water and optimizes hydrodynamic performance.

关 键 词：无压载水船 贯通流系统 岸壁效应 数值模拟 

分 类 号：U661.33[交通运输工程—船舶及航道工程]