A dual-primal coupling technique with local time step for wave propagation problems - Archive ouverte HAL Access content directly
Book Sections Year : 2005

A dual-primal coupling technique with local time step for wave propagation problems

Abstract

We are interested in space-time refinement methods for linear wave propagation. In 1,2 , some stable numerical schemes using non-conforming grids in space and time have been proposed. These methods use a Lagrange multiplier to cope with the interface conditions. The choice of the discretization space of this additional unknown can be in some cases not trivial. In the present paper we propose an alternative method. The main new idea is to use different variational formulations in the fine and in the coarse grids. We present a time discretization that leads to the conservation of a discrete energy and provide a complete stability and error analysis in the case where the time step is twice smaller in one domain than in the other one.
Fichier principal
Vignette du fichier
raff-eccomas-Coupled-Pb-becache-joly-rodriguez-2005.pdf (105.07 Ko) Télécharger le fichier
Origin : Files produced by the author(s)
Loading...

Dates and versions

hal-01853635 , version 1 (03-08-2018)

Identifiers

  • HAL Id : hal-01853635 , version 1

Cite

Eliane Bécache, Patrick Joly, Jeronimo Rodriguez. A dual-primal coupling technique with local time step for wave propagation problems. Eccomas thematic conference/ COUPLED PROBLEMS 2005 M. Papadrakakis, E. Onate and B. Schrefler (Eds) CIMNE, Barcelona, 2005, 2005. ⟨hal-01853635⟩
127 View
33 Download

Share

Gmail Facebook X LinkedIn More