01740nas a2200253 4500008004100000020001400041245009200055210006900147260001500216490000800231520092600239653002301165653001901188653002401207653001901231653002201250653005301272653003601325653002701361100002001388700002001408700002101428856003701449 2022 eng d a0271-209100aModel order reduction for bifurcating phenomena in fluid-structure interaction problems0 aModel order reduction for bifurcating phenomena in fluidstructur c2022/05/230 vn/a3 a
Abstract This work explores the development and the analysis of an efficient reduced order model for the study of a bifurcating phenomenon, known as the Coand? 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.
10aBifurcation theory10aCoandă effect10acontinuum mechanics10afluid dynamics10amonolithic method10aparametrized fluid-structure interaction problem10aProper orthogonal decomposition10areduced order modeling1 aKhamlich, Moaad1 aPichi, Federico1 aRozza, Gianluigi uhttps://doi.org/10.1002/fld.5118