Time-dependent semi-discrete analysis of the viscoelastic fluid flow problem using a variational multiscale stabilised formulation

Gabriel R. Barrenechea, Ernesto Castillo, Ramon Codina

Research output: Contribution to journalArticle

2 Citations (Scopus)
16 Downloads (Pure)

Abstract

In this article we analyse a stabilised finite element formulation recently proposed to approximate viscoelastic fluid flows. The formulation has shown to have accuracy and robustness in the different benchmarks tested in the viscoelastic framework and permitting the use of equal interpolation of the unknown fields. We first present results about a linearised sub-problem, for which well-posedness and stability results can be proved. Then, the semi-discrete nonlinear time-dependent case is addressed using a fixed point theorem, which allows us to prove existence of a semi-discrete solution, along with error estimates.
Original languageEnglish
Pages (from-to)792–819
Number of pages28
JournalIMA Journal of Numerical Analysis
Volume39
Issue number2
Early online date24 Apr 2018
DOIs
Publication statusPublished - 1 Apr 2019

Keywords

  • viscoelastic fluids
  • stabilised finite element methods
  • time-dependent flows

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