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Existence, uniqueness and stability of steady flows of second- and third-grade fluids in an unbounded pipe-like domain. (English) Zbl 1006.76003

Summary: We study steady motions of viscous incompressible third-grade fluids in unbounded channels with arbitrary shape. Such flows exist for small fluxes, due to a pressure drop. We prove that they are asymptotically stable in time, provided the viscosity is sufficiently large, and the initial perturbation is sufficiently small.

MSC:

76A05 Non-Newtonian fluids
35Q35 PDEs in connection with fluid mechanics
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