余欣, 杨剑涛, 何炎平, 等. 定位艏型自航绞吸挖泥船船艉型线比较及水动力性能分析[J]. 中国舰船研究, 2024, 19(X): 1–9. DOI: 10.19693/j.issn.1673-3185.03558
引用本文: 余欣, 杨剑涛, 何炎平, 等. 定位艏型自航绞吸挖泥船船艉型线比较及水动力性能分析[J]. 中国舰船研究, 2024, 19(X): 1–9. DOI: 10.19693/j.issn.1673-3185.03558
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YU X, YANG J T, HE Y P, et al. Comparison of aft hull lines of positioning bow type self-propelled cutter suction dredger and analysis of their hydrodynamic performance[J]. Chinese Journal of Ship Research, 2024, 19(X): 1–9 (in Chinese). DOI: 10.19693/j.issn.1673-3185.03558
Citation: YU X, YANG J T, HE Y P, et al. Comparison of aft hull lines of positioning bow type self-propelled cutter suction dredger and analysis of their hydrodynamic performance[J]. Chinese Journal of Ship Research, 2024, 19(X): 1–9 (in Chinese). DOI: 10.19693/j.issn.1673-3185.03558
shu

定位艏型自航绞吸挖泥船船艉型线比较及水动力性能分析

Comparison of aft hull lines of positioning bow type self-propelled cutter suction dredger and analysis of their hydrodynamic performance

    摘要
  • 摘要:
    目的 定位艏型自航绞吸挖泥船（CSD）的水动力性能与普通船型相比存在较大差异，为合理选择和设计自航绞吸挖泥船的船尾型线，进行水动力性能分析。
    方法 首先，采用计算流体力学（CFD）方法开展船模阻力试验数值验证；然后，在此基础上对比分析双呆木艉和双尾鳍艉这2种船尾型线的静水阻力性能、艉部流场、轴向伴流分数及不均匀度等水动力性能。
    结果 结果显示，在各航速下，双尾鳍艉的总阻力系数均小于双呆木；在设计航速点，双尾鳍艉的总阻力系数较双呆木艉小8.6%，而双呆木艉的伴流目标函数（WOF）较双尾鳍艉小11.0%，轴向伴流场更均匀。
    结论 研究结果可为同类船型的型线设计和优化提供参考价值。

     

    Abstract:
    Objectives The hydrodynamic performance of the positioning bow type self-propelled cutter suction dredger (CSD) is of significant difference from ordinary ships, which is to be investigated so that stern lines could be rationally selected and designed.
    Methods Firstly, Computational fluid dynamics (CFD)method is applied to carry out simulation verification and validation of model resistance test. On this basis, hydrodynamic performance of two hulls with various stern shapes, namely twin deadwood and twin skeg, including calm water resistance behavior, stern wake field, axial wake fraction, and the nonuniform level of axial wake field, is then compared and analyzed.
    Results The result shows that the total resistance coefficient of twin skeg hull is lower than twin deadwood at each of target speeds,. At design speed, the total resistance coefficient of the former is 8.6% lower than the latter, while wake object function (WOF) of the latter is judged to be better than the former by 11.0% from perspective of the nonuniform level of axial wake field.
    Conclusions The study result is of significant reference for lines design and optimization of similar hull type.

     

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