Journal
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
Volume 305, Issue -, Pages 936-958Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cma.2016.03.026
Keywords
Nonlinear slip boundary condition; Variational inequality; Augmented Lagrangian; Alternating direction method of multipliers; Marchuk-Yanenko's scheme
Funding
- National Research Foundation of South Africa [85796, N00401]
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In this article, we discuss the numerical solution of the Stokes and Navier-Stokes equations completed by nonlinear slip boundary conditions of friction type in two and three dimensions. To solve the Stokes system, we first reduce the related variational inequality into a saddle point-point problem for a well chosen augmented Lagrangian. To solve this saddle point problem we suggest an alternating direction method of multiplier together with finite element approximations. The solution of the Navier-Stokes system combines finite element approximations, time discretization by operator splitting and augmented Lagrangian method. Numerical experiment results for two and three dimensional flow confirm the interest of these approaches. (C) 2016 Elsevier B.V. All rights reserved.
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