On the interface matrix for fluid–structure interaction problems with fictitious domain approach

Daniele Boffi, Fabio Credali*, Lucia Gastaldi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We study a recent formulation for fluid–structure interaction problems based on the use of a distributed Lagrange multiplier in the spirit of the fictitious domain approach. In this paper, we focus our attention on a crucial computational aspect regarding the interface matrix for the finite element discretization: it involves integration of functions supported on two different meshes. Several numerical tests show that accurate computation of the interface matrix has to be performed in order to ensure the optimal convergence of the method.

Original languageEnglish (US)
Article number115650
JournalComputer Methods in Applied Mechanics and Engineering
Volume401
DOIs
StatePublished - Nov 1 2022

Keywords

  • Fictitious domain
  • Fluid–structure interaction
  • Mesh intersection
  • Non-matching grids

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Mechanical Engineering
  • General Physics and Astronomy
  • Computer Science Applications

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