27 citations · 31 across the 18 of their papers we have counts for
20 papers
Benchmark cases for gradient-based optimization in linear elastic solid mechanics using lattice Boltzmann methods
Johannes L. Grafen, Florian Kaiser, Stephan Simonis +2
Gradient-based optimization (GBO) of problems constrained by partial differential equations is central to parameter identification and structural design in solid mechanics. Lattice…
Computing statistical Euler limits of the Navier--Stokes equations in three dimensions
Johannes L. Grafen, Tobias Rohner, Stephan Simonis
We develop a Monte Carlo lattice Boltzmann method to compute statistical solutions to the three-dimensional incompressible Navier--Stokes and Euler equations. Entropic space-time a…
Computing statistical solutions of a Mach 2000 astrophysical jet
Stephan Simonis, Gauthier Wissocq
The multi-dimensional compressible Euler equations admit non-unique entropy solutions in turbulent regimes, and extreme-Mach astrophysical flows are a natural setting in which this…
Efficient Wall-Modelled Large Eddy Simulation of Rotors using Homogenized Lattice Boltzmann Methods
Adrian Kummerländer, Shota Ito, Maximilian Schecher +4
Accurately capturing the dynamic forces acting on rotors as well as their wake effects presents a significant challenge for computational fluid dynamics (CFD) due to high Reynolds…
Uncertain data assimilation for urban wind flow simulations with OpenLB-UQ
Mingliang Zhong, Dennis Teutscher, Adrian Kummerländer +3
Accurate prediction of urban wind flow is essential for urban planning, pedestrian safety, and environmental management. Yet, it remains challenging due to uncertain boundary condi…
OpenLB-UQ: An Uncertainty Quantification Framework for Incompressible Fluid Flow Simulations
Mingliang Zhong, Adrian Kummerländer, Shota Ito +3
Uncertainty quantification (UQ) is crucial in computational fluid dynamics to assess the reliability and robustness of simulations, given the uncertainties in input parameters. Ope…
Analytical solution for dynamic evaporation of liquid in isothermal condition
Luiz Eduardo Czelusniak, Tim Niklas Bingert, Stephan Simonis +2
An analytical solution based on a diffuse interface model is presented for an isothermal evaporation problem under sub-saturation pressure. The macroscopic equations are derived fr…
On the consistency of pseudo-potential lattice Boltzmann methods
Luiz Eduardo Czelusniak, Tim Niklas Bingert, Mathias J. Krause +1
We derive the partial differential equation (PDE) to which the pseudo-potential lattice Boltzmann method (P-LBM) converges under diffusive scaling, providing a rigorous basis for i…
On the range of validity of parabolic models for fluid flow through isotropic homogeneous porous media
Davide Dapelo, Stephan Simonis, Mohaddeseh Mousavi Nezhad +2
Lattice-Boltzmann methods are established mesoscopic numerical schemes for fluid flow, that recover the evolution of macroscopic quantities (viz., velocity and pressure fields) evo…
Predicting Filter Medium Performances in Chamber Filter Presses with Digital Twins Using Neural Network Technologies
Dennis Teutscher, Tyll Weber-Carstanjen, Stephan Simonis +1
Efficient solid-liquid separation is crucial in industries like mining, but traditional chamber filter presses depend heavily on manual monitoring, leading to inefficiencies, downt…
A Digital Urban Twin Enabling Interactive Pollution Predictions and Enhanced Planning
Dennis Teutscher, Fedor Bukreev, Adrian Kummerlaender +5
Digital twin (DT) technology is increasingly used in urban planning, leveraging real-time data integration for environmental monitoring. This paper presents an urban-focused DT tha…
Nonuniqueness of lattice Boltzmann schemes derived from finite difference methods
Eliane Kummer, Stephan Simonis
Recently, the construction of finite difference schemes from lattice Boltzmann schemes has been rigorously analyzed [Bellotti et al. (2022), Numer. Math. 152, pp. 1-40]. It is thus…
Homogenized lattice Boltzmann methods for fluid flow through porous media -- part I: kinetic model derivation
Stephan Simonis, Nicolas Hafen, Julius Jeßberger +3
In this series of studies, we establish homogenized lattice Boltzmann methods (HLBM) for simulating fluid flow through porous media. Our contributions in part I are twofold. First,…
OpenLB User Guide: Associated with Release 1.6 of the Code
Adrian Kummerländer, Samuel J. Avis, Halim Kusumaatmaja +18
OpenLB is an object-oriented implementation of LBM. It is the first implementation of a generic platform for LBM programming, which is shared with the open source community (GPLv2)…
Binary mixture flow with free energy lattice Boltzmann methods
Stephan Simonis, Johannes Nguyen, Samuel J. Avis +2
We use free energy lattice Boltzmann methods (FRE LBM) to simulate shear and extensional flow of a binary mixture in two and three dimensions. To this end, two classical configurat…
Constructing relaxation systems for lattice Boltzmann methods
Stephan Simonis, Martin Frank, Mathias J. Krause
We present the first top-down ansatz for constructing lattice Boltzmann methods (LBM) in d dimensions. In particular, we construct a relaxation system (RS) for a given scalar, line…
Consistent lattice Boltzmann methods for the volume averaged Navier-Stokes equations
Fedor Bukreev, Stephan Simonis, Adrian Kummerländer +2
We derive a novel lattice Boltzmann scheme, which uses a pressure correction forcing term for approximating the volume averaged Navier-Stokes equations (VANSE) in up to three dimen…
Limit Consistency of Lattice Boltzmann Equations
Stephan Simonis, Mathias J. Krause
We establish the notion of limit consistency as a modular part in proving the consistency of lattice Boltzmann equations (LBEs) with respect to a given partial differential equatio…
Comprehensive computational model for coupled fluid flow, mass transfer and light supply in tubular photobioreactors equipped with glass sponges
Albert Mink, Kira Schediwy, Clemens Posten +3
The design and optimization of photobioreactors (PBR) can benefit from the development of robust and yet quantitatively accurate computational models, that incorporate the complex…
Fluid-Structure Interaction Simulation of a Coriolis Mass Flowmeter using a Lattice Boltzmann Method
Marc Haussmann, Peter Reinshaus, Stephan Simonis +2
In this paper we use a fluid-structure interaction (FSI) approach to simulate a Coriolis mass flowmeter (CMF). The fluid dynamics are calculated by the open source framework OpenLB…