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首页> 外文期刊>International Journal of Naval Architecture and Ocean Engineering >Global hydroelastic model for springing and whipping based on a free-surface CFD code (OpenFOAM)
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Global hydroelastic model for springing and whipping based on a free-surface CFD code (OpenFOAM)

机译：基于自由表面CFD代码（OpenFOAM）的弹跳和鞭打的全局水弹性模型

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ABSTRACT The theoretical background and a numerical solution procedure for a time domain hydroelastic code are presented in this paper. The code combines a VOF-based free surface flow solver with a flexible body motion solver where the body linear elastic deformation is described by a modal superposition of dry mode shapes expressed in a local floating frame of reference. These mode shapes can be obtained from any finite element code. The floating frame undergoes a pseudo rigid-body motion which allows for a large rigid body translation and rotation and fully preserves the coupling with the local structural deformation. The formulation relies on the ability of the flow solver to provide the total fluid action on the body including e.g. the viscous forces, hydrostatic and hydrodynamic forces, slamming forces and the fluid damping. A numerical simulation of a flexible barge is provided and compared to experiments to show that the VOF-based flow solver has this ability and the code has the potential to predict the global hydroelastic responses accurately.
机译：摘要提出了时域水弹性代码的理论背景和数值求解程序。该代码将基于VOF的自由表面流动求解器与柔性人体运动求解器结合在一起，其中，人体线性弹性变形通过以局部浮动参考框架表示的干燥模式形状的模式叠加来描述。这些模式形状可以从任何有限元代码中获得。浮动框架经受伪刚体运动，从而允许较大的刚体平移和旋转，并完全保留与局部结构变形的耦合。该制剂依赖于流动求解器在身体上提供总的流体作用的能力，包括例如。粘性力，流体静力和流体动力，撞击力和流体阻尼。提供了柔性驳船的数值模拟，并将其与实验进行了比较，以表明基于VOF的流动求解器具有此功能，并且代码具有准确预测整体水弹性响应的潜力。

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