In this work, a fully partitioned method for simulating FSI (Fluid-Structure Interaction) problems is presented. The solid domain is modeled with the FEM (Finite Element Method), and the fluid domain with the PFEM (Particle Finite Element Method). The coupling is done using a Co-Simulation approach in the open-source code Kratos Multiphysics, which allows to select from many different available structural element formulations and constitutive material models for the structural part. The Lagrangian description of the PFEM is well suited to model free-surface flows for the fluid part. The chosen FSI strategy for the partitioned scheme is the Block Gauss-Seidel algorithm with Aitken relaxation, to accelerate its convergence. The method is well suited for highly non-linear problems, which may include large deformations, braking waves, and evolving free-surface phenomena. Several numerical examples are presented to test and validate the proposed method.
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In this work, a fully partitioned method for simulating FSI (Fluid-Structure Interaction) problems is presented. The solid domain is modeled with the FEM (Finite Element Method), and the fluid domain with the PFEM (Particle Finite Element Method). The coupling is done using a Co-Simulation approach in the open-source code Kratos Multiphysics, which allows to select from many different available structural element formulations and constitutive material models for the structural part. The Lagrangi...
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