Projection based semi--implicit partitioned Reduced Basis Method for non parametrized and parametrized Fluid--Structure Interaction problems

Nonino, Monica; Ballarin, Francesco; Rozza, Gianluigi; Maday, Yvon

doi:10.48550/arxiv.2201.03236

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2022

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“…In addition to providing a replicable benchmark for future investigation in the multi-physics context, we tested a reconstruction using the RB method, which has been proven to be effective for FSI problems. [44][45][46][47][48][49]…”

Section: Related Workmentioning

confidence: 99%

Model order reduction for bifurcating phenomena in fluid‐structure interaction problems

Khamlich

Pichi

Rozza

2022

Numerical Methods in Fluids

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This work explores the development and the analysis of an efficient reduced order model for the study of a bifurcating phenomenon, known as the Coandă effect, in a multi‐physics setting involving fluid and solid media. Taking into consideration a fluid‐structure interaction problem, we aim at generalizing previous works towards a more reliable description of the physics involved. In particular, we provide several insights on how the introduction of an elastic structure influences the bifurcating behavior. We have addressed the computational burden by developing a reduced order branch‐wise algorithm based on a monolithic proper orthogonal decomposition. We compared different constitutive relations for the solid, and we observed that a nonlinear hyper‐elastic law delays the bifurcation w.r.t. the standard model, while the same effect is even magnified when considering linear elastic solid.

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