Approximation of the inductionless MHD problem using a stabilized finite element method

Ramon Planas, Santiago Badia, Ramon Codina

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30 Citations (Scopus)

Abstract

In this work, we present a stabilized formulation to solve the inductionless magnetohydrodynamic (MHD) problem using the finite element (FE) method. The MHD problem couples the Navier-Stokes equations and a Darcy-type system for the electric potential via Lorentz's force in the momentum equation of the Navier-Stokes equations and the currents generated by the moving fluid in Ohm's law. The key feature of the FE formulation resides in the design of the stabilization terms, which serve several purposes. First, the formulation is suitable for convection dominated flows. Second, there is no need to use interpolation spaces constrained to a compatibility condition in both sub-problems and therefore, equal-order interpolation spaces can be used for all the unknowns. Finally, this formulation leads to a coupled linear system; this monolithic approach is effective, since the coupling can be dealt by effective preconditioning and iterative solvers that allows to deal with high Hartmann numbers.

Original languageEnglish
Pages (from-to)2977-2996
Number of pages20
JournalJournal of Computational Physics
Volume230
Issue number8
DOIs
Publication statusPublished - 20 Apr 2011
Externally publishedYes

Keywords

  • HCLL test blanket module
  • Inductionless MHD
  • Monolithic scheme
  • Primal-dual formulation
  • Stabilized finite element formulation
  • Variational multiscale method

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