127 citations · 764 across the 38 of their papers we have counts for
15 papers · 1 filter
Code Generation and Performance Engineering for Matrix-Free Finite Element Methods on Hybrid Tetrahedral Grids
Fabian Böhm, Daniel Bauer, Nils Kohl +5
This paper introduces a code generator designed for node-level optimized, extreme-scalable, matrix-free finite element operators on hybrid tetrahedral grids. It optimizes the local…
waLBerla-wind: a lattice-Boltzmann-based high-performance flow solver for wind energy applications
Helen Schottenhamml, Ani Anciaux-Sedrakian, Frédéric Blondel +2
This article presents the development of a new wind turbine simulation software to study wake flow physics. To this end, the design and development of waLBerla-wind, a new simulato…
A Scalable Multiphysics Algorithm for Massively Parallel Direct Numerical Simulations of Electrophoresis
Dominik Bartuschat, Ulrich Rüde
In this article we introduce a novel coupled algorithm for massively parallel direct numerical simulations of electrophoresis in microfluidic flows. This multiphysics algorithm emp…
A comparative study of fluid-particle coupling methods for fully resolved lattice Boltzmann simulations
Christoph Rettinger, Ulrich Rüde
The direct numerical simulation of particulate systems offers a unique approach to study the dynamics of fluid-solid suspensions by fully resolving the submerged particles and with…
Research and Education in Computational Science and Engineering
Ulrich Rüde, Karen Willcox, Lois Curfman McInnes +30
Over the past two decades the field of computational science and engineering (CSE) has penetrated both basic and applied research in academia, industry, and laboratories to advance…
A quantitative performance analysis for Stokes solvers at the extreme scale
Björn Gmeiner, Markus Huber, Lorenz John +2
This article presents a systematic quantitative performance analysis for large finite element computations on extreme scale computing systems. Three parallel iterative solvers for…
Pore-scale lattice Boltzmann simulation of laminar and turbulent flow through a sphere pack
Ehsan Fattahia, Christian Waluga, Barbara Wohlmuth +3
The lattice Boltzmann method can be used to simulate flow through porous media with full geometrical resolution. With such a direct numerical simulation, it becomes possible to stu…
Large scale lattice Boltzmann simulation for the coupling of free and porous media flow
Ehsan Fattahi, Christian Waluga, Barbara Wohlmuth +1
In this work, we investigate the interaction of free and porous media flow by large scale lattice Boltzmann simulations. We study the transport phenomena at the porous interface on…
Resilience for Exascale Enabled Multigrid Methods
Markus Huber, Björn Gmeiner, Ulrich Rüde +1
With the increasing number of components and further miniaturization the mean time between faults in supercomputers will decrease. System level fault tolerance techniques are expen…
Ultrascale Simulations of Non-smooth Granular Dynamics
Tobias Preclik, Ulrich Rüde
This article presents new algorithms for massively parallel granular dynamics simulations on distributed memory architectures using a domain partitioning approach. Collisions are m…
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…
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…
Liquid-gas-solid flows with lattice Boltzmann: Simulation of floating bodies
Simon Bogner, Ulrich Rüde
This paper presents a model for the simulation of liquid-gas-solid flows by means of the lattice Boltzmann method. The approach is built upon previous works for the simulation of l…
All good things come in threes - Three beads learn to swim with lattice Boltzmann and a rigid body solver
Kristina Pickl, Jan Götz, Klaus Iglberger +4
We simulate the self-propulsion of devices in a fluid in the regime of low Reynolds numbers. Each device consists of three bodies (spheres or capsules) connected with two damped ha…