Non-intrusive reduced order models for partitioned fluid-structure interactions
Abstract
The main goal of this work is to develop a data-driven Reduced Order Model (ROM) strategy from high-fidelity simulation result data of a Full Order Model (FOM). The goal is to predict at lower computational cost the time evolution of solutions of Fluid-Structure Interaction (FSI) problems. For some FSI applications, the elastic solid FOM (often chosen as quasi-static) can take far more computational time than the fluid one. In this context, for the sake of performance one could only derive a ROM for the structure and try to achieve a partitioned FOM fluid solver coupled with a ROM solid one. In this paper, we present a data-driven partitioned ROM on two study cases: (i) a simplified 1D-1D FSI problem representing an axisymmetric elastic model of an arterial vessel, coupled with an incompressible fluid flow; (ii) an incompressible 2D wake flow over a cylinder facing an elastic solid with two flaps. We evaluate the accuracy and performance of the proposed ROM-FOM strategy on these cases while investigating the effects of the model's hyperparameters. We demonstrate a high prediction accuracy and significant speedup achievements using this strategy.
Cite
@article{arxiv.2306.07570,
title = {Non-intrusive reduced order models for partitioned fluid-structure interactions},
author = {Azzeddine Tiba and Thibault Dairay and Florian de Vuyst and Iraj Mortazavi and Juan-Pedro Berro Ramirez},
journal= {arXiv preprint arXiv:2306.07570},
year = {2024}
}
Comments
Preprint