In this paper, the partitioned MPS-FEM method is employed for two-dimensional and three-dimensional free surface flow interacting with deformable structures. The discretization of fluid and structure govern equations relies independently on the Moving Particle Semi-implicit method (MPS) and Finite Element Method (FEM). Two types of interpolation techniques, including the Shape Function Based Interpolation Technique (SFBI) and Kernel Function Based Interpolation Technique (KFBI) are proposed on the fluid-structure isomerous interface. The performance of MPS-FEM coupled method is validated by a series of two-dimensional Fluid-Structure Interaction (FSI) tests, including precision test and convergence validation. The results obtained show good agreements with published experimental result as well as referenced numerical results. At last, an extension of aforementioned coupled method to three-dimensional model is performed to investigate characteristics of three-dimensional FSI phenomena. It indicates that partitioned MPS-FEM method is effective and stable for the simulation of free-surface flow interacting with deformable structures.

在本文中，分区 MPS-FEM 方法用于二维和三维自由表面流动与变形结构的相互作用。流体和结构控制方程的离散化独立依赖于移动粒子半隐式方法 (MPS) 和有限元方法 (FEM)。在流体-结构异构界面上提出了两种类型的插值技术，包括基于形状函数的插值技术（SFBI）和基于核函数的插值技术（KFBI）。MPS-FEM 耦合方法的性能通过一系列二维流固耦合 (FSI) 测试进行验证，包括精度测试和收敛性验证。获得的结果与公布的实验结果以及参考的数值结果显示出良好的一致性。最后，将上述耦合方法扩展到三维模型以研究三维 FSI 现象的特征。这表明分区 MPS-FEM 方法对于模拟自由表面流动与可变形结构的相互作用是有效且稳定的。