Weak Solutions for a Non-Newtonian Diffuse Interface Model with Different Densities

Abstract

We consider weak solutions for a diffuse interface model of two non-Newtonian viscous, incompressible fluids of power-law type in the case of different densities in a bounded, sufficiently smooth domain. This leads to a coupled system of a nonhomogenouos generalized Navier-Stokes system and a Cahn-Hilliard equation. For the Cahn-Hilliard part a smooth free energy density and a constant, positive mobility is assumed. Using the $L^{\infty }$-truncation method we prove existence of weak solutions for a power-law exponent $p>\frac{2d+2}{d+2}$, $d=2,3$.

References in corpus (3)

• On an Incompressible Navier-Stokes/Cahn-Hilliard System with Degenerate Mobility
• Existence of Weak Solutions for a Diffuse Interface Model for Two-Phase Flows of Incompressible Fluids with Different Densities
• Solenoidal Lipschitz truncation for parabolic PDE's

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