Ship & Boat ›› 2020, Vol. 31 ›› Issue (06): 35-41.DOI: 10.19423/j.cnki.31-1561/u.2020.06.035

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Simulation of Water Entry Slamming of Flat-Bottom and Flat-Bottom Opening Structure

HE Meng-xiang1, TAN Kai-ren2, WU Jian-guo1   

  1. 1. College of Civil Engineering, Zhejiang University of Technology, Hangzhou 310023, China;
    2. Marine Design & Research Institute of China, Shanghai 200011, China
  • Received:2020-02-28 Revised:2020-05-09 Online:2020-12-25 Published:2021-09-15

平底与平底开口结构的入水砰击仿真研究

何梦翔1, 谭开忍2, 吴剑国1   

  1. 1.浙江工业大学 土木工程学院 杭州310023;
    2.中国船舶及海洋工程设计研究院 上海200011
  • 作者简介:何梦翔（1994-）,男,硕士。研究方向：结构设计和研究。谭开忍（1974-）,男,博士,高级工程师。研究方向：船体结构设计研究。吴剑国（1963-）,男,博士,教授。研究方向:船舶与海洋工程结构。

Abstract: The calculation of the slamming pressure for flat-bottom and flat-bottom opening structures is the hot issue of the ship structural design. The water entry of the two-dimensional (2D) and three-dimensional (3D) rigid flat-bottom structures have been simulated by using MSC.dytran. The simulation results are compared with the published experimental results and the simplified calculation method in the specification, to analyze the influence of the 3D flow on the slamming pressure of the flat-bottom structure. The influence of the opening on the slamming pressure of the flat-bottom structure is also researched according to the simulation results of the water entry of the 3D rigid flat-bottom opening structure. The results can provide reference for the structural design of the ship.

Key words: flat-bottom structure, slamming, flat-bottom opening structure, simulation

摘要： 平底及平底开口结构砰击压力计算是船舶结构设计的热点问题。文章采用MSC.Dytran软件对刚性平底结构入水砰击过程进行了二维和三维的仿真研究,并与文献的试验结果以及规范的简化计算法进行对比,分析了流体的三维流动对平底结构砰击压力的影响;对三维刚性平底开口结构入水砰击过程问题进行仿真计算,研究了开口对平底结构砰击压力的影响规律。研究结果可供舰船结构设计参考。

关键词: 平底结构, 砰击, 开口平底结构, 仿真计算

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