paper

Leray-Hopf solutions to a viscoelastoplastic fluid model with nonsmooth stress-strain relation

arXiv:2104.05545 · doi:10.1016/j.nonrwa.2021.103491

Abstract

We consider a fluid model including viscoelastic and viscoplastic effects. The state is given by the fluid velocity and an internal stress tensor that is transported along the flow with the Zaremba-Jaumann derivative. Moreover, the stress tensor obeys a nonlinear and nonsmooth dissipation law as well as stress diffusion. We prove the existence of global-in-time weak solutions satisfying an energy inequality under general Dirichlet conditions for the velocity field and Neumann conditions for the stress tensor.

Accepted for publication in Nonlinear Anal. Real World Appl

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