基于阻力性能的金枪鱼船船型参数优化研究

Optimization of Hull Form Parameters for Tuna Boats Based on Resistance Performance

在一定约束条件下,合理改变船体形状可以有效地降低船舶阻力。论文使用了一种船体线型改变方法,描述了船型参数变化与总阻力变化的关系。首先确定影响渔船阻力性能的主要船型参数,然后使用Lackenby方法改变船体型线生成系列船型样本空间,利用数值模拟对样本进行阻力预报,最后探讨船型参数变化对总阻力的影响,并优选出阻力性能最优的船型。计算结果表明,在设计工况(Fr=0.28)下,采用该方法优化后的船型较初始船型总阻力降低5.29%。

Under certain constraints,changing hull form reasonably can reduce its resistance effectively.A method of hull deformation based on Lackenby’s theory is proposed to reduce ship resistance.With this method a series of hull samples are generated,and the CFD is applied to simulate the resistance of the samples to investigate the influence of hull form parameters on the total resistance and figure out an optimal hull form.Calculation results illustrate that total resistance of the optimized ship type is 5.29%lower than that of the original one(Fr=0.28),which may provide technical support for relevant investigations.