Pré-Publication, Document De Travail Année : 2025

A global-in-time domain decomposition approach for transient acoustic-elastic interaction

Résumé

This work develops a global-in-time iterative domain decomposition approach for transient fluid-structure interaction problems involving acoustic scattering by elastic obstacles. The proposed method, inspired by optimized Schwarz waveform relaxation algorithms, proceeds by iteratively exchanging Robin boundary conditions, enabling the non-intrusive coupling of distinct fluid and structure solvers, and works for arbitrary transient incident acoustic fields. We prove the convergence of the proposed coupling iterations in continuous form. A BEM-FEM coupling implementation of the method is then validated against a reference analytical solution, and its efficiency, accuracy and robustness demonstrated through numerical experiments on configurations representative of potential industrial applications.

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hal-05249078 , version 1 (10-09-2025)

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  • HAL Id : hal-05249078 , version 1

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Marc Bonnet, Stéphanie Chaillat, Alice Nassor. A global-in-time domain decomposition approach for transient acoustic-elastic interaction. 2025. ⟨hal-05249078⟩
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