基于CFD的4万t自卸船线型优化设计

Lines Optimization Design of a 40 000 DWTSelf-unloading Carrier Based on CFD

为得到满足航速、布置需求的4万t自卸船线型,选取1艘吨位相近的自卸船,在满足总布置及排水量的条件下进行母型变换,对变换后的线型进行优化,利用计算流体力学方法对优化方案进行预报,分析优化方案下自卸船的总阻力、推进性能、桨盘面伴流场等;在优化方案的基础上分析艏艉侧推孔对阻力推进性能的影响;对带侧推孔的优化线型方案开展若干吃水下的快速性模型试验,预估不同吃水下的航速。

In order to get the line type of a 40000 DWT self-unloading carrier,a self-unloading carrier with similar tonnage was selected.Under the condition of meeting the general layout and displacement,the parent ship type was transformed and optimized.The CFD method was used to predict the optimization scheme,and the flow field details of the self-unloading carrier,such as the total resistance,propulsion performance,propeller disk surface wake field were analyzed.On the basis of the optimization scheme,the analysis of the resistance propulsion performance of the bow and stern thrust holes was carried out.Aiming at the optimization scheme of ship form with side thrust hole,several model tests of rapidity under different draughts were carried out to predict the speed under different draughts.