Resolution and implementation of the nonstationary vorticity velocity pressure formulation of the Navier–Stokes equations

Abstract This paper deals with the iterative algorithm and the implementation of the spectral discretization of time-dependent Navier–Stokes equations in dimensions two and three. We present a variational formulation, which includes three independent unknowns: the vorticity, velocity, and pressure....

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Bibliographic Details
Published in:Boundary Value Problems
Main Authors: Mohamed Abdelwahed, Ebtisam Alharbi, Nejmeddine Chorfi, Henda Ouertani
Format: Article
Language:English
Published: SpringerOpen 2020-10-01
Subjects:
Nonstationary Navier–Stokes equations
Implicit Euler’s scheme
Spectral discretization
GMRES method
Online Access:http://link.springer.com/article/10.1186/s13661-020-01464-8
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Summary:Abstract This paper deals with the iterative algorithm and the implementation of the spectral discretization of time-dependent Navier–Stokes equations in dimensions two and three. We present a variational formulation, which includes three independent unknowns: the vorticity, velocity, and pressure. In dimension two, we establish an optimal error estimate for the three unknowns. The discretization is deduced from the implicit Euler scheme in time and spectral methods in space. We present a matrix linear system and some numerical tests, which are in perfect concordance with the analysis.
ISSN:1687-2770

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