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Numerical study of damaged ship's compartment sinking with air compression effect

机译：空气压缩作用下破损船舱沉没的数值研究

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摘要

The computational fluid dynamics (CFD) method was applied to study the dynamics of damaged ship during flooding and sinking process, in which the air compression effect was taken into account. The studied case was a ship's compartment with bottom damage sinking into calm water. To investigate the air flow effect, the compartment was set to be fully ventilated, partially ventilated and airtight for different cases. In the numerical simulation, the air was treated as ideal gas. The volume of fluid method was adopted to capture the air and water interface. The shear stress transport model was employed for turbulence modelling. The technique of dynamic layering mesh was used to-deal with the ship sinking motion. All the numerical schemes were implemented with the CFD solver ANSYS-Fluent. The benchmarking results were presented and discussed, including the time and gird dependence studies, the turbulent model against the laminar model, the air compressible model against the incompressible model and the computation against the model test. The effect of air flow on water flooding and ship sinking was also analysed.
机译：应用计算流体力学（CFD）方法研究了淹没和沉没过程中受损船舶的动力学特性，其中考虑了空气压缩效应。被研究的案例是一个船舱，其底部损坏沉入了平静的水中。为了研究气流的影响，在不同情况下将隔间设置为完全通风，部分通风和气密。在数值模拟中，空气被视为理想气体。采用流体体积法捕获空气和水的界面。剪切应力传递模型用于湍流建模。动态分层网格技术用于应对沉船运动。所有的数值方案都是用CFD求解器ANSYS-Fluent实现的。提出并讨论了基准测试结果，包括时间和网格依赖研究，层流模型的湍流模型，不可压缩模型的空气可压缩模型以及模型测试的计算。还分析了气流对注水和沉船的影响。

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  • 来源
    《Ocean Engineering》 |2018年第1期|68-76|共9页
  • 作者

    Gao Zhiliang; Wang Yaling; Su Yan; Chen Lin;

  • 作者单位

    Wuhan Univ Technol, Minist Educ, Key Lab High Performance Ship Technol, Wuhan 430063, Hubei, Peoples R China;

    CCCC Second Harbor Consultants Co Ltd, Wuhan 430071, Hubei, Peoples R China;

    Wuhan Univ Technol, Minist Educ, Key Lab High Performance Ship Technol, Wuhan 430063, Hubei, Peoples R China;

    Zhejiang Ocean Univ, Donghai Sci & Technol Coll, Zhoushan 316000, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Damaged ship; Flooding; Sinking; Air compression; CFD;

    机译：损坏的船舶;洪水;沉没;空气压缩;差价合约;

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