文章摘要
渔船减阻球艏模型优化研究
Study on Optimization of drag reduction spherical bow model of fishing boat
投稿时间:2022-05-09  修订日期:2022-06-27
DOI:
中文关键词: 总阻力  自由变形法  球鼻艏  BP神经网络  优化
英文关键词: Total resistance  Free deformation method  Bulbous bow  BP neural network  optimization
基金项目:辽宁省教育厅2021年度面上基金项目:海洋捕捞渔船综合节能关键技术研发(LJKZ0728)
作者单位邮编
张亚 大连海洋大学 116023
庞洪祯 大连海洋大学 
徐梦婷 齐鲁工业大学(山东省科学院) 
刘冰清 大连海洋大学 
白世阳 大连海洋大学 
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中文摘要:
      为探究球鼻艏变化对渔船水动力性能的影响,在母型船直立艏方案的基础上,以总阻力为优化目标,进行增设球艏设计。首先对渔船进行参数化建模,采用自由变形法(FFD)控制艏部的几何参数进行改造;然后使用拉丁超立方设计方法进行采样,使用CFD数值模拟与BP神经网络相结合的方法,建立以高度精确的数值模拟为优化特征的母型船预测模型;最后利用遗传算法对渔船进行目标优化,寻求总阻力优解的设计点。研究表明:基本船型配合增设优解的球艏后,在三种航速情况下,总阻力分别减小0.2%、0.58%、1.02%。
英文摘要:
      In order to explore the influence of the change of bulbous bow on the hydrodynamic performance of fishing vessels, an additional bulbous bow is designed based on the vertical bow scheme of the mother ship and taking the total resistance as the optimization objective. Firstly, the parametric modeling of the fishing boat is carried out, and the geometric parameters of the bow are transformed by using the geometric reconstruction method (FFD); Then, the Latin hypercube design method is used for sampling, and the combination of CFD numerical simulation and BP neural network is used to establish the mother ship prediction model with highly accurate numerical simulation as the optimization feature; Finally, the genetic algorithm is used to optimize the fishing boat and find the design point of the optimal solution of the total resistance. The results show that the total resistance decreases by 0.2%, 0.58% and 1.02% respectively at three speeds after the basic ship type is combined with the addition of the optimal spherical bow.
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