Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5773486 | Annales de l'Institut Henri Poincare (C) Non Linear Analysis | 2017 | 26 Pages |
Abstract
We investigate the influence of the rough boundaries on viscoelastic flows, described by the diffusive Oldroyd model. The fluid domain has a rough wall modeled by roughness patterns of size εâª1. We present and rigorously justify an asymptotic expansion with respect to ε, at any order, based upon the definition of elementary problems: Oldroyd-type problems at the global scale defined on a smoothened domain and boundary-layer corrector problems. The resulting analysis guarantees optimality with respect to the truncation error and leads to a numerical algorithm which allows us to build the approximation of the solution at any required precision.
Related Topics
Physical Sciences and Engineering
Mathematics
Analysis
Authors
Laurent Chupin, Sébastien Martin,