TY - GEN
T1 - Fluid-structure interaction coupling techniques based on sensitivities
AU - Degroote, J.
AU - Bruggeman, P.
AU - Haelterman, R.
AU - Vierendeels, J.
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Aitken underrelaxation
KW - Flexible tube
KW - Fluid-structure interaction
KW - Fourier error analysis
KW - Interface-GMRES(R)
KW - Partitioned solution
KW - Reduced-order models
UR - http://www.scopus.com/inward/record.url?scp=84858428446&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84858428446
SN - 9781905088249
T3 - Proceedings of the 6th International Conference on Engineering Computational Technology
BT - Proceedings of the 6th International Conference on Engineering Computational Technology
T2 - 6th International Conference on Engineering Computational Technology, ECT 2008
Y2 - 2 September 2008 through 5 September 2008
ER -