Article (Scientific journals)
A comparative study of interpolation algorithms on non-matching meshes for PFEM-FEM fluid-structure interactions
Lacroix, Martin; Février, Simon; Fernandez Sanchez, Eduardo Felipe et al.
2024In Computers and Mathematics with Applications, 155, p. 51-65
Peer reviewed
 

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Keywords :
Non-matching meshes; Radial basis functions; k-nearest neighbours; Fluid-structure interaction; Particle finite element method; Computational fluid dynamics
Abstract :
[en] In simulations involving fluid-structure interactions, the partitioned coupling approach allows calculating the fluid flow and the structural displacement using different solvers, which are coupled by a structure-to-fluid algorithm. This partitioned scheme can result in non-conforming meshes at the solid-fluid interface, especially when the fluid and the structure meshes contain elements of different characteristic sizes. In this context, a mesh-interpolation technique is required to transmit the nodal information from one mesh to the other. This paper focuses on comparing radial basis functions and k-nearest neighbours interpolations on fluid-structure interaction test cases. Indeed, those are fast and flexible techniques requiring no topological information other than relative distances between nodes, allowing a straightforward transfer of nodal data between non-conforming meshes. This feature is particularly favourable in the Particle Finite Element Method (PFEM), where remeshing procedures result in significant changes of the finite element discretisation at the fluid-structure interface. Accordingly, our contribution compares the interpolations in a PFEM/FEM partitioned scheme, using 2D and 3D benchmark problems.
Research Center/Unit :
A&M - Aérospatiale et Mécanique - ULiège
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Lacroix, Martin  ;  Université de Liège - ULiège > Aérospatiale et Mécanique (A&M)
Février, Simon  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Fernandez Sanchez, Eduardo Felipe  ;  Université de Liège - ULiège > Aérospatiale et Mécanique (A&M)
Papeleux, Luc  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Boman, Romain  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique
Ponthot, Jean-Philippe  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > LTAS-Mécanique numérique non linéaire
Language :
English
Title :
A comparative study of interpolation algorithms on non-matching meshes for PFEM-FEM fluid-structure interactions
Publication date :
February 2024
Journal title :
Computers and Mathematics with Applications
ISSN :
0898-1221
Publisher :
Elsevier BV
Volume :
155
Pages :
51-65
Peer reviewed :
Peer reviewed
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique
Funding number :
T.0183.21
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since 11 December 2023

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