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arXiv · 2109.04013

New stabilized $P_1\times P_0$ finite element methods for nearly inviscid and incompressible flows

Yuwen Li·Ludmil Zikatanov
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Abstract

This work proposes a new stabilized $P_1\times P_0$ finite element method for solving the incompressible Navier--Stokes equations. The numerical scheme is based on a reduced Bernardi--Raugel element with statically condensed face bubbles and is pressure-robust in the small viscosity regime. For the Stokes problem, an error estimate uniform with respect to the kinematic viscosity is shown. For the Navier--Stokes equation, the nonlinear convection term is discretized using an edge-averaged finite element method. In comparison with classical schemes, the proposed method does not require tuning of parameters and is validated for competitiveness on several benchmark problems in 2 and 3 dimensional space.

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Yuwen Li, Ludmil Zikatanov. 2021-09-09. New stabilized $P_1\times P_0$ finite element methods for nearly inviscid and incompressible flows. https://doi.org/10.1016/j.cma.2022.114815

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