Fluid-structure interaction coupling techniques based on sensitivities

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

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

Abstract

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.

OriginalspracheEnglisch
TitelProceedings of the 6th International Conference on Engineering Computational Technology
PublikationsstatusVeröffentlicht - 2008
Veranstaltung6th International Conference on Engineering Computational Technology, ECT 2008 - Athens, Griechenland
Dauer: 2 Sept. 20085 Sept. 2008

Publikationsreihe

NameProceedings of the 6th International Conference on Engineering Computational Technology

Konferenz

Konferenz6th International Conference on Engineering Computational Technology, ECT 2008
Land/GebietGriechenland
OrtAthens
Zeitraum2/09/085/09/08

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