Fluid-structure interaction coupling techniques based on sensitivities

J. Degroote, P. Bruggeman, R. Haelterman, J. Vierendeels

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Résumé

The coupled solution of a time step in a partitioned fluid-structure interaction simulation must satisfy the equilibrium conditions on the fluid-structure interface and can be obtained with coupling iterations between fluid and structure. This paper demonstrates that coupling with reduced-order models and Interface-GMRESR require less coupling iterations than Aitken underrelaxation and interface-GMRES because the former techniques use sensitivities based on all previous coupling iterations. The change in performance due to a variation of the time step and structural stiffness is explained with Fourier error analysis of the fixed-point iterations between flow and structure in a simulation of the flow in a flexible tube.

langue originaleAnglais
titreProceedings of the 6th International Conference on Engineering Computational Technology
étatPublié - 2008
Evénement6th International Conference on Engineering Computational Technology, ECT 2008 - Athens, Grcce
Durée: 2 sept. 20085 sept. 2008

Série de publications

NomProceedings of the 6th International Conference on Engineering Computational Technology

Une conférence

Une conférence6th International Conference on Engineering Computational Technology, ECT 2008
Pays/TerritoireGrcce
La villeAthens
période2/09/085/09/08

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