Work

A Multi‐Fidelity Model for Wave Energy Converters

Year: 2024

Type: article

Abstract: ABSTRACT The objective of this study is to develop a three‐dimensional numerical model for a floating point absorber wave energy converter in the presence of sea waves, considering its interaction with a bi‐fluid flow (comprising air and water). The primary aim is to create an efficient computational tool that achieves two key objectives: firstly, reducing the computational time typically associated with high‐fidelity Computational Fluid Dynamics (CFD) models, and secondly, curing the lack of accuracy of low‐fidelity asymptotic or projection‐based reduced‐order models in regions subjected to viscous and highly nonlinear effects. To address these objectives, we propose a multi‐fidelity model based on domain decomposition. This approach combines a high‐fidelity CFD solver, which accurately captures the behavior in viscous and nonlinear regions, with a Reduced Order Model (ROM) based on Proper Orthogonal Decomposition (POD), tailored for weakly nonlinear regions. By integrating these components spatially, we simulate the dynamics of the floating body within a unified framework. This methodology ensures precise predictions of the body's motion for both in‐sample (reproduction) and out‐of‐sample (prediction) configurations.

Source: International Journal for Numerical Methods in Fluids

DOI: 10.1002/fld.5354

Authors: Beatrice Battisti, Giovanni Bracco, Michel Bergmann

Institutions: Université de Bordeaux, Politecnico di Torino, Institut de Mathématiques de Bordeaux, Centre Inria de l'université de Bordeaux, MEMPHIS: Modèles et méthodes pour les problèmes multiphysiques et interactions

Language: English

Topic: Wave and Wind Energy Systems

Subfield: Ocean Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: hybrid

Estimated APC paid: $4,220