计入气穴的水下爆炸作用下结构流固耦合三维数值模拟

张阿漫; 任少飞; 李青; 李佳

doi:10.3879/j.issn.1000-0887.2012.09.008

计入气穴的水下爆炸作用下结构流固耦合三维数值模拟

doi: 10.3879/j.issn.1000-0887.2012.09.008

哈尔滨工程大学船舶工程学院, 哈尔滨 150001;

基金项目: 新世纪优秀人才支持计划基金资助项目(NCET100054)；第十二届霍英东教育基金资助项目（121073）；国家自然科学基金委员会-中国工程物理研究院联合基金资助项目（10976008）；国家自然科学基金重点资助项目(50939002)

详细信息

通讯作者:
张阿漫(1981—),男,江西九江人,教授,博士生导师(E-mail: amanzhang@gmail.com);任少飞(1986—),男,陕西宝鸡人,博士生(联系人.E-mail: shaofeiren@gmail.com).

中图分类号: O383.1;U661.43
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出版历程
- 收稿日期: 2010-11-29
- 修回日期: 2012-04-27
- 刊出日期: 2012-09-15

3D Numerical Simulation on the Fluid-Structure Interaction of Structure Subjected to Underwater Explosion With Cavitation

¹College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, P.R.China;²China Ship Development and Design Center, Shanghai 201102, P.R.China

摘要

摘要: 水下爆炸在结构物面附近产生的气穴现象，严重影响水下爆炸作用下的流固耦合动响应，是舰船水下爆炸领域的难点，传统的边界元方法、有限元方法(FEM)难以解决水下爆炸气穴现象这类强非线性问题．针对此问题，计及流体中的气穴现象，考虑流体的可压缩型，忽略流体粘性，建立水下爆炸瞬态强非线性流固耦合三维数值模型，采用流体谱单元方法(SEM)和结构有限元方法求解该模型．计算结果表明：相对有限元法，谱单元法具有更高的计算精度，且谱单元解与解析解、试验值吻合良好．在此基础上，结合ABAQUS软件，分别探讨三维球壳、船体板架在水下爆炸作用下的瞬态流固耦合机理，给出气穴区域及其对水中结构物动响应的影响特征，旨在为舰船水下爆炸瞬态流固耦合问题的相关研究提供参考．
- 水下爆炸 /
- 谱单元法 /
- 流固耦合 /
- 气穴 /
- 球壳 /
- 板架
Abstract: In an underwatershock environment, cavitation occurs near the structural surface. The dynamic response of fluidstructure interaction is influenced seriously by the cavitation effects. It is also the difficulty in the field of underwater explosion. With traditional boundary element method and finite element method (FEM), it is difficult to solve the nonlinear problem with cavitation effects subjected to underwater explosion. To solve this problem, in consideration of the cavitation effects and fluid compressibility, with fluid viscidity neglected, a 3D numerical model of transient nonlinear fluid-structure interaction subjected to underwater explosion was built. Fluid spectral element method (SEM) and finite element method were adopted to solve this model. After comparison with FEM, it is shown that SEM is more precise than FEM, and the SEM results are in good coincidence with benchmark results and experiment results. Based on this, combined with ABAQUS, the transient fluidstructure interaction mechanism of 3D submerged spherical shell and ship stiffened plates subjected to underwater explosion were discussed, and the cavitation region and its influence on the structural dynamic responses were presented. The reference for relevant researches on transient fluidstructure interaction of ship structure subjected to underwater explosion is provided.
- underwater explosion /
- spectral element method /
- fluid-structure interaction /
- cavitation /
- spherical shell /
- stiffened plate

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参考文献(24)

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计入气穴的水下爆炸作用下结构流固耦合三维数值模拟

doi: 10.3879/j.issn.1000-0887.2012.09.008

通讯作者:
张阿漫(1981—),男,江西九江人,教授,博士生导师(E-mail: amanzhang@gmail.com);任少飞(1986—),男,陕西宝鸡人,博士生(联系人.E-mail: shaofeiren@gmail.com).

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3D Numerical Simulation on the Fluid-Structure Interaction of Structure Subjected to Underwater Explosion With Cavitation

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计入气穴的水下爆炸作用下结构流固耦合三维数值模拟

doi: 10.3879/j.issn.1000-0887.2012.09.008

通讯作者: 张阿漫(1981—),男,江西九江人,教授,博士生导师(E-mail: amanzhang@gmail.com);任少飞(1986—),男,陕西宝鸡人,博士生(联系人.E-mail: shaofeiren@gmail.com).

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出版历程

3D Numerical Simulation on the Fluid-Structure Interaction of Structure Subjected to Underwater Explosion With Cavitation

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出版历程

目录

通讯作者:
张阿漫(1981—),男,江西九江人,教授,博士生导师(E-mail: amanzhang@gmail.com);任少飞(1986—),男,陕西宝鸡人,博士生(联系人.E-mail: shaofeiren@gmail.com).