3 papers
math.NA2021
Fast mass lumped multiscale wave propagation modelling
Sjoerd Geevers, Roland Maier
In this paper, we investigate the use of a mass lumped fully explicit time stepping scheme for the discretisation of the wave equation with underlying material parameters that vary…
math.NA2019
An equilibrated a posteriori error estimator for arbitrary-order Nédélec elements for magnetostatic problems
Joscha Gedicke, Sjoerd Geevers, Ilaria Perugia
We present a novel \textit{a posteriori} error estimator for Nédélec elements for magnetostatic problems that is constant-free, i.e. it provides an upper bound on the error that do…
math.NA2019
Doubling the convergence rate by pre- and post-processing the finite element approximation for linear wave problems
Sjoerd Geevers
In this paper, a novel pre- and post-processing algorithm is presented that can double the convergence rate of finite element approximations for linear wave problems. In particular…