Stabilized Galerkin for Transient Advection of Differential Forms
Résumé
We deal with the discretization of generalized transient advection problems for differential
forms on bounded spatial domains. We pursue an Eulerian method of lines approach
with explicit time-stepping. Concerning spatial discretization we extend the jump stabilized
Galerkin discretization proposed in [H. Heumann and R. Hiptmair, Stabilized
Galerkin methods for magnetic advection, Math. Modelling Numer. Analysis, 47 (2013),
pp. 1713–1732] to forms of any degree and, in particular, advection velocities that may
have discontinuities resolved by the mesh. A rigorous a priori convergence theory is established
for Lipschitz continuous velocities, conforming meshes and standard finite element
spaces of discrete differential forms. However, numerical experiments furnish evidence of
the good performance of the new method also in the presence of jumps of the advection
velocity.
Domaines
Analyse numérique [math.NA]Origine | Fichiers produits par l'(les) auteur(s) |
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