节点文献

定常流场中蓝鲨头部及胸鳍受力状况的数值模拟及实证研究

Numerical Simulation and Empirical Research of Blue Shark Head and Pectoral Fins Suffered Stress State in Steady Flow Field

【作者】 胡庆松刘习武申屠基康

【Author】 HU Qing-Song;LIU Xi-Wu;SHENTU Ji-Kang;Shanghai Ocean University;Ocean and Fishery Research Institute;

【机构】 上海海洋大学宁波市海洋与渔业研究院

【摘要】 蓝鲨具有高效率和远距离的巡游模式,其胸鳍起到重要的平衡和稳定作用,头部为主要阻力源,以头部和胸鳍为突破口进行相关研究对于AUV等海工装备的优化设计具有重要价值。通过对蓝鲨形体数值化描述,结合相关特征进行精细化建模,基于三维模型进行流场中有限元计算和分析,获得了蓝鲨头部和胸鳍受力状况;分析蓝鲨头部和胸鳍的受力分布,并通过改变蓝鲨胸鳍展角进行同等条件的流体计算试验,得到无差异性的结果。利用3D打印技术将所建蓝鲨三维模型打印出高一致性实体,在水槽中进行多批次实验,通过误差分析,验证了数值计算结果的准确性。计算结果表明蓝鲨的头部和胸鳍对其所受阻力和升力有最关键的影响,通过分析不同规格蓝鲨在非定速水流冲击下所受阻力和升力的大小,拟合出了蓝鲨头部和胸鳍的受力变化规律,获得了一般意义下非定速流场中所受阻力和升力的二元三次函数模型,为AUV结构优化设计等相关应用提供了良好的基础。

【Abstract】 Blue shark possesses efficient and long distance cruising mode.Its pectoral fins play key role in balance and stability keeping.The main resistance force comes from its head.Taking pectoral fins and head as the research breakthrough point is valuable for the ocean equipment optimized design such as AUV.By numerical description and other physical features of the blue shark body,the 3Dmodel is set up and imported to software to operate the infinite calculation and analysis in flow field,so that the suffered stress state across the body is obtained.The results show no differences through analyzing the stress distribution of blue shark head and pectoral fins,and carrying fluid calculation under same conditions by changing the unfold angle of blue shark pectoral fins.Exact blue shark body model is produced by 3D printer.Multiple experiments are conducted in the water sink to test its hydrodynamic performance,and the fluid simulation result is verified through error analysis.The calculation results show blue shark’s head and pectoral fins devote main contribution on the drag and lift force.Through the drag and lift force analysis of multiple sized of blue shark in different velocity flow field,the varying law of blue shark’s head and pectoral fin is fitted,and general binary cubic description functions are acquired,which set stable basis for the application of optimized design of AUV etc.

【关键词】 蓝鲨胸鳍头部有限元3D打印受力分布函数
【Key words】 blue sharkpectoral finheadfinite element3Dprintforce spread function
【基金】 国家自然科学基金项目(51309150);上海市科技创新行动计划项目(15DZ1202500,16DZ1205100)资助~~
  • 【文献出处】 中国海洋大学学报(自然科学版) ,Periodical of Ocean University of China , 编辑部邮箱 ,2017年07期
  • 【分类号】U661
  • 【下载频次】53
节点文献中: 

本文链接的文献网络图示:

本文的引文网络
网页聊天
live chat
在线营销
live chat