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 language||English (US)|
|Journal||Computer Methods in Applied Mechanics and Engineering|
|State||Published - Nov 1 2022|
Bibliographical noteFunding Information:
The three authors are member of INdAM Research group GNCS and their research is partially supported by IMATI/CNR . Boffi and Gastaldi are partially supported by PRIN/MIUR .
© 2022 Elsevier B.V.
- Fictitious domain
- Fluid–structure interaction
- Mesh intersection
- Non-matching grids
ASJC Scopus subject areas
- Computational Mechanics
- Mechanics of Materials
- Mechanical Engineering
- Physics and Astronomy(all)
- Computer Science Applications