Uniqueness and Bifurcation Branches for Planar Steady Navier–Stokes Equations Under Navier Boundary Conditions

Author:

Arioli GianniORCID,Gazzola FilippoORCID,Koch Hans

Abstract

AbstractThe stationary Navier–Stokes equations under Navier boundary conditions are considered in a square. The uniqueness of solutions is studied in dependence of the Reynolds number and of the strength of the external force. For some particular forcing, it is shown that uniqueness persists on some continuous branch of solutions, when these quantities become arbitrarily large. On the other hand, for a different forcing, a branch of symmetric solutions is shown to bifurcate, giving rise to a secondary branch of nonsymmetric solutions. This proof is computer-assisted, based on a local representation of branches as analytic arcs.

Funder

Politecnico di Milano

Publisher

Springer Science and Business Media LLC

Subject

Applied Mathematics,Computational Mathematics,Condensed Matter Physics,Mathematical Physics

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4. Amrouche, C., Rejaiba, A.: $$L^p$$-theory for Stokes and Navier–Stokes equations with Navier boundary condition. J. Differ. Equ. 256, 1515–1547 (2014)

5. Arioli, G., Gazzola, F., Koch, H.: Programs and data files for the proof of Lemmas 2, 3 and 5. http://www1.mate.polimi.it/gianni/sns.tgz

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