Un método combinado de Newton Semi-smooth y conjuntos de nivel para la simulación numérica de fluidos tipo Bingham con frontera libre

Abstract

In this thesis we consider a quasi-static formulation of a time-dependent free boundary Bingham flow, where the static subproblem is formulated as a primal--dual optimality system of a regularized version of the original Bingham model. We propose a numerical scheme for its numerical simulation that combines a Semismooth-Newton method for solving the associated Bingham static subproblem, together with the level-set method which describes the motion of the free boundary of the Bingham fluid. We analyze the static subproblem and present numerical simulations of the proposed methodology. In order to validate our methodology, we will compare this one with known numerical results for the Newtonian case.