127 citations · 764 across the 38 of their papers we have counts for
7 papers · 1 filter
Optimization of the Multigrid-Convergence Rate on Semi-structured Meshes by Local Fourier Analysis
B. Gmeiner, T. Gradl, F. Gaspar +1
In this paper a local Fourier analysis for multigrid methods on tetrahedral grids is presented. Different smoothers for the discretization of the Laplace operator by linear finite…
Parallel Multiphysics Simulations of Charged Particles in Microfluidic Flows
Dominik Bartuschat, Ulrich Rüde
The article describes parallel multiphysics simulations of charged particles in microfluidic flows with the waLBerla framework. To this end, three physical effects are coupled: rig…
Boundary Conditions for Free Interfaces with the Lattice Boltzmann Method
Simon Bogner, Regina Ammer, Ulrich Rüde
In this paper we analyze the boundary treatment of the lattice Boltzmann method (LBM) for simulating 3D flows with free surfaces. The widely used free surface boundary condition of…
A Scala Prototype to Generate Multigrid Solver Implementations for Different Problems and Target Multi-Core Platforms
Harald Koestler, Christian Schmitt, Sebastian Kuckuk +3
Many problems in computational science and engineering involve partial differential equations and thus require the numerical solution of large, sparse (non)linear systems of equati…
Numerical Investigations on Hatching Process Strategies for Powder Bed Based Additive Manufacturing using an Electron Beam
Matthias Markl, Regina Ammer, Ulrich Rüde +1
This paper investigates in hatching process strategies for additive manufacturing using an electron beam by numerical simulations. The underlying physical model and the correspondi…
Validation Experiments for LBM Simulations of Electron Beam Melting
Regina Ammer, Matthias Markl, Vera Jüchter +2
This paper validates 3D simulation results of electron beam melting (EBM) processes comparing experimental and numerical data. The physical setup is presented which is discretized…
Drag correlation for dilute and moderately dense fluid-particle systems using the lattice Boltzmann method
Simon Bogner, Swati Mohanty, Ulrich Rüde
This paper presents a numerical study of flow through static random assemblies of monodisperse, spherical particles. A lattice Boltzmann approach based on a two relaxation time col…