Implicit coupling of partitioned fluid-structure interaction problems with reduced order models

Authors:
Jan Vierendeels;Lieve Lanoye;Joris Degroote;Pascal Verdonck
Affiliations:
Ghent University, Department of Flow, Heat and Combustion Mechanics, St.-Pietersnieuwstraat 41, B-9000 Ghent, Belgium;Institute Biomedical Technology, St.-Pietersnieuwstraat 41, B-9000 Ghent, Belgium;Ghent University, Department of Flow, Heat and Combustion Mechanics, St.-Pietersnieuwstraat 41, B-9000 Ghent, Belgium;Institute Biomedical Technology, St.-Pietersnieuwstraat 41, B-9000 Ghent, Belgium
Venue:
Computers and Structures
Year:
2007

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Abstract

In this paper a newly developed technique for strongly coupled fluid-structure interaction problems is presented. In order to achieve strong coupling the Jacobian of the fluid and/or structural problem is needed or has to be approximated. A technique is presented which uses the Jacobian from reduced order models that are built up during the coupling iterations. As validation, pressure wave propagation in a blood vessel is computed and as a second example growth and detachment of a gas bubble from a vertical needle submerged in a liquid is simulated. Both examples illustrate the algorithmic performance and show accurate results.