Reduced Order Models for Fluid-Solid Interaction Systems with Mixed Finite Element Formulations

In this paper, we employ fluid-structure interaction (FSI) systems with both immersed flexible structures and free surfaces to study singular value decomposition (SVD) based model reduction methods and traditional mode superposition methods. Our numerical results confirm that SVD-based model reducti...

Full description

Saved in:
Bibliographic Details
Published in:Proceedings of the 2nd International Symposium on Computational Mechanics and the 12th International Conference on the Enhancement and Promotion of Computational Methods in Engineering and Science 2009-12, Vol.1233, p.1303-1308
Main Authors: Yang, Ye, Wu, Tao, Wang, Sheldon X
Format: Article
Language:English
Subjects:
Acoustoelasticity
Contamination
Decomposition
Displacement
Finite element method
Flexible structures
Fluid-solid interactions
Fluid-structure interaction
Mathematical analysis
Mathematical models
Mode superposition method
Model reduction
Reduced order models
Vorticity
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, we employ fluid-structure interaction (FSI) systems with both immersed flexible structures and free surfaces to study singular value decomposition (SVD) based model reduction methods and traditional mode superposition methods. Our numerical results confirm that SVD-based model reduction methods are reliable. Excellent comparisons are obtained between original transient solutions and recovered data composed with only a few dominant principal components. For acoustoelastic FSI systems, we employ a three-field mixed finite element formulation with displacement, pressure, and vorticity moment unknowns. Our numerical examples also demonstrate that mixed finite element formulations can predict different ranges of coupled frequencies and mode shapes without the contamination of spurious nonzero frequencies.
ISSN:0094-243X