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首页> 外文期刊>Ocean Engineering >Validation of a combined dynamic mesh strategy for the simulation of body's large amplitude motion in wave
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Validation of a combined dynamic mesh strategy for the simulation of body's large amplitude motion in wave

机译：组合动态网格策略在波浪中人体大幅度运动仿真中的验证

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摘要

The computational fluid dynamics (CFD) method based on solving the Reynolds-averaged Navier-Stokes equations was used to simulate the flow field of the body-wave interaction. A dynamic mesh strategy, which combines the sliding interface technique and the dynamic layering technique, was adopted to handle the mesh update due to the body motion in the simulation. This mesh strategy was capable of treating the arbitrary translational and rotational motions of the body. To validate its performance, the mesh strategy was implemented with the CFD solver ANSYS-Fluent and was applied to solve the 2-D problem of a freely floating box-shaped structure subjected to the focused wave. The present numerical results were compared with the published experimental data and numerical results. For the case of wave generation, the present dynamic Mesh strategy incurred 4% loss in accuracy and 6% loss in efficiency compared to the static mesh strategy. For the case of body-wave interaction, the accuracies of the present dynamic mesh strategy and the dynamic overset mesh technique were at the same level. In addition, an application of the present dynamic mesh strategy to the 3-D simulation of a damaged ship capsizing in regular beam wave was demonstrated.
机译：基于求解雷诺平均Navier-Stokes方程的计算流体动力学（CFD）方法用于模拟体波相互作用的流场。在仿真中，采用了结合滑动界面技术和动态分层技术的动态网格策略来处理由于人体运动引起的网格更新。这种网格策略能够处理身体的任意平移和旋转运动。为了验证其性能，使用CFD求解器ANSYS-Fluent实施了网格策略，并将其用于解决受聚焦波作用的自由浮动箱形结构的二维问题。将当前数值结果与已发布的实验数据和数值结果进行比较。对于波浪产生的情况，与静态网格策略相比，当前的动态网格策略导致精度损失4％，效率损失6％。对于体波相互作用，当前动态网格策略和动态过冲网格技术的精度处于同一水平。此外，还演示了将当前的动态网格策略应用到常规波束波中受损船舶倾覆的3-D仿真中。

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  • 来源
    《Ocean Engineering》 |2019年第1期|106169.1-106169.12|共12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|Wuhan Univ Technol Sch Transportat 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

    Floating body; Body-wave interaction; Sliding interface technique; Dynamic layering technique; CFD;

    机译：浮体;体波相互作用;滑动界面技术;动态分层技术;差价合约;

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