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Free-surface flow interactions with deformable structures using an SPH-FEM model

机译:使用SPH-FEM模型的自由表面流动与可变形结构的相互作用

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摘要

A two-dimensional SPH-FEM model is proposed to investigate its application in the fluid-structure interaction (FSI) problem. The fluid model is based on the theory of Smoothed Particle Hydrodynamics (SPH) and the structural dynamics employ a large-deformation Finite Element Method (FEM). This paper describes the basics of both SPH and FEM models and presents the development of a loosely coupled SPH-FEM model. Validation results of two benchmark FSI problems are illustrated. The first test case is flow in a sloshing tank interacting with an elastic body (Souto-Iglesias et al., 2008) and the second one is dam-break flow through an elastic gate (Antoci et al., 2007). The results obtained with the SPH-FEM model show good agreement with published experimental results and suggest that the SPH-FEM model is a viable and effective numerical tool for FSI problems.
机译:提出了二维SPH-FEM模型,以研究其在流固耦合问题中的应用。流体模型基于平滑粒子流体动力学(SPH)理论,结构动力学采用大变形有限元方法(FEM)。本文介绍了SPH和FEM模型的基础知识,并提出了松耦合SPH-FEM模型的开发。说明了两个基准FSI问题的验证结果。第一个测试案例是晃荡池中与弹性体相互作用的流动(Souto-Iglesias等,2008),第二个测试案例是通过弹性闸门的溃坝流(Antoci等,2007)。 SPH-FEM模型获得的结果与已发表的实验结果吻合良好,表明SPH-FEM模型是解决FSI问题的可行且有效的数值工具。

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