POD-Galerkin reduced-order models (ROMs) for fluid-structure interaction problems (incompressible fluid and thin structure) are proposed in this paper. Both the high-fidelity and reduced-order methods are based on a Chorin-Temam operator-splitting approach. Two different reduced-order methods are proposed, which differ on velocity continuity condition, imposed weakly or strongly, respectively. The resulting ROMs are tested and compared on a representative haemodynamics test case characterized by wave propagation, in order to assess the capabilities of the proposed strategies.
Ballarin, F., Rozza, G., Maday, Y., Reduced-Order Semi-Implicit schemes for Fluid-Structure interaction problems, Model Reduction of Parametrized Systems, Springer-Verlag Italia s.r.l., MILAN, ITALY 2017 <<MODELING, SIMULATION & APPLICATIONS>>, 17: 149-167. 10.1007/978-3-319-58786-8_10 [http://hdl.handle.net/10807/174165]
Reduced-Order Semi-Implicit schemes for Fluid-Structure interaction problems
Ballarin, Francesco;
2017
Abstract
POD-Galerkin reduced-order models (ROMs) for fluid-structure interaction problems (incompressible fluid and thin structure) are proposed in this paper. Both the high-fidelity and reduced-order methods are based on a Chorin-Temam operator-splitting approach. Two different reduced-order methods are proposed, which differ on velocity continuity condition, imposed weakly or strongly, respectively. The resulting ROMs are tested and compared on a representative haemodynamics test case characterized by wave propagation, in order to assess the capabilities of the proposed strategies.
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