Pressure-robust analysis of divergence-free and conforming FEM for evolutionary incompressible Navier-Stokes flows release_diuxdt23dreb7gzuwlfqhze6ze

by Philipp W. Schroeder, Gert Lube

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2017  

Abstract

This article focusses on the analysis of a conforming finite element method for the time-dependent incompressible Navier-Stokes equations. For divergence-free approximations, in a semi-discrete formulation, we prove error estimates for the velocity that hold independently of both pressure and Reynolds number. Here, a key aspect is the use of the discrete Stokes projection for the error splitting. Optionally, edge-stabilisation can be included in the case of dominant convection. Emphasising the importance of conservation properties, the theoretical results are complemented with numerical simulations of vortex dynamics and laminar boundary layer flows.
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Type  article
Stage   submitted
Date   2017-03-12
Version   v2
Language   en ?
arXiv  1610.03224v2
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