Symmetry (Feb 2020)

Numerical Solution of the Navier–Stokes Equations Using Multigrid Methods with HSS-Based and STS-Based Smoothers

  • Galina Muratova,
  • Tatiana Martynova,
  • Evgeniya Andreeva,
  • Vadim Bavin,
  • Zeng-Qi Wang

DOI
https://doi.org/10.3390/sym12020233
Journal volume & issue
Vol. 12, no. 2
p. 233

Abstract

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Multigrid methods (MGMs) are used for discretized systems of partial differential equations (PDEs) which arise from finite difference approximation of the incompressible Navier−Stokes equations. After discretization and linearization of the equations, systems of linear algebraic equations (SLAEs) with a strongly non-Hermitian matrix appear. Hermitian/skew-Hermitian splitting (HSS) and skew-Hermitian triangular splitting (STS) methods are considered as smoothers in the MGM for solving the SLAE. Numerical results for an algebraic multigrid (AMG) method with HSS-based smoothers are presented.

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