|
Title:
|
A monolithic Lagrangian approach for fluid-structure interaction problems
|
|
Author:
|
Ryzhakov, Pavel; Rossi, Riccardo; Idelsohn Barg, Sergio Rodolfo; Oñate Ibáñez de Navarra, Eugenio
|
|
Other authors:
|
Universitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria; Universitat Politècnica de Catalunya. (MC)2 - Grup de Mecànica Computacional en Medis Continus |
|
Abstract:
|
Current work presents a monolithic method for the solution of fluid–structure interaction problems involving flexible structures and free-surface flows. The technique presented is based upon the utilization of a Lagrangian description for both the fluid and the structure. A linear displacement–pressure interpolation pair is used for the fluid whereas the structure utilizes a standard displacement-based formulation. A slight fluid compressibility is assumed that allows to relate the mechanical pressure to the local volume variation. The method described features a global pressure condensation which in turn enables the definition of a purely displacement-based linear system of equations. A matrix-free technique is used for the solution of such linear system, leading to an efficient implementation. The result is a robust method which allows dealing with FSI problems involving arbitrary variations in the shape of the fluid domain. The method is completely free of spurious added-mass effects. |
|
Abstract:
|
Peer Reviewed |
|
Subject(s):
|
-Àrees temàtiques de la UPC::Enginyeria mecànica::Mecànica de fluids
-Fluid-structure interaction
-Finite element method
-Fluid–structure interaction
-PFEM
-Monolithic FSI
-Lagrangian fluids
-CFD
-Elements finits, Mètode dels
-Interacció fluid-estructura |
|
Rights:
|
|
|
Document type:
|
Article - Published version
Article |
|
Share:
|
|
