Design Optimization of the Lines of the Bulbous Bow of a Hull Based on Parametric Modeling and Computational Fluid Dynamics Calculation
Design Optimization of the Lines of the Bulbous Bow of a Hull Based on Parametric Modeling and Computational Fluid Dynamics Calculation
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DOI：
10.3390/mca22010004
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发表时间：
2017-01
影响因子：
1.9
通讯作者：
W. Luo;Linqiang Lan
中科院分区：
文献类型：
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作者：
W. Luo;Linqiang Lan
为了降低船舶兴波阻力，在船舶设计阶段，利用自动优化平台对船体球首的线型进行了优化。采用非均匀有理基样条(NURBS)对船体进行了参数化建模。兴波阻力的计算采用朗肯源面元法。采用一种混合优化策略来实现优化目标。以滚装船为例，以兴波阻力最小为目标，说明了所采用的优化方法。优化结果表明，球首线型优化后兴波阻力明显减小，近船首波形平缓，验证了所提出的优化设计策略的有效性。
To reduce the ship wave-making resistance, the lines of the bulbous bow of a hull are optimized by an automatic optimization platform at the ship design stage. Parametric modeling was applied to the hull by using non-uniform rational basis spline (NURBS). The Rankine-source panel method was used to calculate the wave-making resistance. A hybrid optimization strategy was applied to achieve the optimization goal. A Ro-Ro ship was taken as an example to illustrate the optimization method adopted, with the objective to minimize the wave-making resistance. The optimization results show that wave-making resistance obviously reduces and the wave-shape of the near bow becomes gentle after the lines of the bulbous bow of the hull are optimized, which demonstrates the validity of the proposed optimization design strategy.