【摘要】 以西江5000t散货示范船为研究对象，通过数值模拟方法，将阻力和推进效率最小作为目标，完成船体型线的优选设计，获得性能优良的船体型线方案。通过搜集和整理相关内河船型的型线与构型资料，筛选出4个主流船型方案，并采用CAESES软件进行参数化建模，生成初始船型；基于Lackenby变形方法，控制艏艉构型参数化模型的排水量和主尺度保持一致，得到多个满足设计需求的初步方案；通过CFD计算，筛选出阻力较小的船型作为初始方案，并进一步探究艉轴高度对推进效率的影响，确定优化后的艉轴位置；经过进一步的调整，获得满足浮态和排水量约束的船体型线方案。CFD计算结果表明，相较于西江主流营运的5 000 t级散货船，新船型的阻力降低17.76%,为其他船型的线型设计提供参考。更多还原

【Abstract】 Focusing on the hull form optimization design of a 5 000 t bulk carrier for the Xijiang river, the numerical simulation methods were applied to minimize resistance and enhance propulsive efficiency. The investigation commenced with the collection and analysis of hull form data from existing inland waterway vessels, leading to the identification of four mainstream hull configurations. Parametric modeling was implemented using CAESES software to generate initial hull geometries. The Lackenby transformation method was employed to maintain consistent displacement and principal dimensions across bow and stern configurations while developing multiple preliminary design schemes. Through computational fluid dynamics(CFD) simulations, the hull configuration demonstrating superior resistance performance was selected as the baseline model. Further investigation into the influence of propeller shaft height on propulsive efficiency enabled the determination of an optimized shaft positioning. After iterative refinements addressing buoyancy equilibrium and displacement constraints, a final optimized hull form was developed. CFD validation results indicated that the optimized hull configuration achieves a 17.76% reduction in total resistance compared to conventional 5 000 t bulk carriers currently operating in the Xijiang river.更多还原