211 citations · 712 across the 40 of their papers we have counts for
4 papers · 1 filter
Learned infinite elements
Thorsten Hohage, Christoph Lehrenfeld, Janosch Preuss
We study the numerical solution of scalar time-harmonic wave equations on unbounded domains which can be split into a bounded interior domain of primary interest and an exterior do…
An unfitted Eulerian finite element method for the time-dependent Stokes problem on moving domains
Henry von Wahl, Thomas Richter, Christoph Lehrenfeld
We analyse a Eulerian Finite Element method, combining a Eulerian time-stepping scheme applied to the time-dependent Stokes equations using the CutFEM approach with inf-sup stable…
Sweeping preconditioners for stratified media in the presence of reflections
Janosch Preuß, Thorsten Hohage, Christoph Lehrenfeld
In this paper we consider sweeping preconditioners for time harmonic wave propagation in stratified media, especially in the presence of reflections. In the most famous class of sw…
Locking free and gradient robust H(div)-conforming HDG methods for linear elasticity
Guosheng Fu, Christoph Lehrenfeld, Alexander Linke +1
Robust discretization methods for (nearly-incompressible) linear elasticity are free of volume-locking and gradient-robust. While volume-locking is a well-known problem that can be…