We were proud to have @DC, from thePolitecnico di Milano present at the EuroMed SIMULIA Conference 2024, which was held June 11-12, 2024, at the Politecnico di Milano in Milan, Italy. Please see below for the slides of his presentation, titled "3D Fluid-Structure Interaction Simulation with a Novel Reconnection-Based Arbitrary-Lagrangian-Eulerian Approach".
PDF Slides:
Abstract:
The simulation of fluid-structure interaction (FSI) problems is crucial in many engineering applications as well as in the understanding of complex natural phenomena. This study presents a novel coupled solver for the solution of FSI problems based on a partitioned scheme.
The solid subdomain has been investigated using the out-of-the-shelf solver Abaqus/Standard, exploiting its highly efficient and comprehensive library of structural elements, including shells, membranes, and beams, along with its extensive collection of constitutive laws.
The fluid subdomain, on the contrary, has been treated with an in-house solver based on the Arbitrary Lagrangian Eulerian (ALE) approach. While ALE methods for Navier-Stokes equations are commonly employed in FSI simulations with moving boundaries, they experience serious difficulties when large displacement and deformation are present. To address this limitation, we proposed a novel re-meshing procedure based on mesh connectivity manipulation and refinement. The new algorithm aims to reduce the remapping of solutions after re-meshing, preserving the solution's accuracy.
Finally, to manage the coupling conditions, we exploited the SIMULIA Co-Simulation Services (CSS), a software component for the run-time coupling of simulation tools. In particular, we employed a Gauss-Seidel coupling scheme consisting of a staggered and sequential approach, where fluid and solid are solved iteratively until convergence on the interface region is achieved.
The FSI solver has been validated through several benchmarks, as well as through engineering applications in the biological and sailing fields.
About the Speaker:
Daniele Di Cristofaro is a PhD student in structural seismic and geotechnical engineering at Politecnico di Milano, which is within the structure section. In 2022, he obtained a master’s degree in mathematical engineering at Politecnico di Milano. Currently, Daniele is working on in-depth research specifically geared towards Fluid-Structure-Interaction numerical scheme involving thin and lightweight structures, which can be effectively treated using shell solid mechanics theory.
Daniele likes to spend his free time swimming, reading and traveling.
@DC
PhD Student, Politecnico di Milano
More content from the EuroMed SIMULIA Conference 2024 can be found here:
