293 citations · 728 across the 18 of their papers we have counts for
20 papers
Augmenting a pure and hybrid vertical equilibrium scheme via data-driven surrogate modelling
Ivan Buntic, Bernd Flemisch
Vertical equilibrium (VE) models have been introduced as computationally efficient alternatives to traditional mass and momentum balance equations for fluid flow in porous media. S…
Numerical Investigation of Preferential Flow Paths in Enzymatically Induced Calcite Precipitation supported by Bayesian Model Analysis
Rebecca Kohlhaas, Johannes Hommel, Felix Weinhardt +3
The usability of enzymatically induced calcium carbonate precipitation (EICP) as a method for altering porous-media properties, soil stabilization, or biocementation depends on our…
A fully-implicit solving approach to an adaptive multi-scale model -- coupling a vertical-equilibrium and full-dimensional model for compressible, multi-phase flow in porous media
Ivan Buntic, Martin Schneider, Bernd Flemisch +1
Vertical equilibrium models have proven to be well suited for simulating fluid flow in subsurface porous media such as saline aquifers with caprocks. However, in most cases the dim…
Upscaling and Effective Behavior for Two-Phase Porous-Medium Flow using a Diffuse Interface Model
Mathis Kelm, Carina Bringedal, Bernd Flemisch
We investigate two-phase flow in porous media and derive a two-scale model, which incorporates pore-scale phase distribution and surface tension into the effective behavior at the…
The FluidFlower International Benchmark Study: Process, Modeling Results, and Comparison to Experimental Data
Bernd Flemisch, Jan M. Nordbotten, Martin Fernø +30
Successful deployment of geological carbon storage (GCS) requires an extensive use of reservoir simulators for screening, ranking and optimization of storage sites. However, the ti…
Visual Ensemble Analysis of Fluid Flow in Porous Media across Simulation Codes and Experiment
Ruben Bauer, Quynh Quang Ngo, Guido Reina +5
We study the question of how visual analysis can support the comparison of spatio-temporal ensemble data of liquid and gas flow in porous media. To this end, we focus on a case stu…
A sustainable infrastructure concept for improved accessibility, reusability, and archival of research software
Timo Koch, Dennis Gläser, Anett Seeland +6
Research software is an integral part of most research today and it is widely accepted that research software artifacts should be accessible and reproducible. However, the sustaina…
Evaluation of tools for describing, reproducing and reusing scientific workflows
Philipp Diercks, Dennis Gläser, Ontje Lünsdorf +3
In the field of computational science and engineering, workflows often entail the application of various software, for instance, for simulation or pre- and postprocessing. Typicall…
Coupling staggered-grid and vertex-centered finite-volume methods for coupled porous-medium free-flow problems
Martin Schneider, Dennis Gläser, Kilian Weishaupt +3
In this work, a new discretization approach for coupled free and porous-medium flows is introduced, which uses a finite volume staggered-grid method for the discretization of the N…
A Surrogate-Assisted Uncertainty-Aware Bayesian Validation Framework and its Application to Coupling Free Flow and Porous-Medium Flow
Farid Mohammadi, Elissa Eggenweiler, Bernd Flemisch +4
Existing model validation studies in geoscience often disregard or partly account for uncertainties in observations, model choices, and input parameters. In this work, we develop a…
Comparison of cell- and vertex-centered finite-volume schemes for flow in fractured porous media
Dennis Gläser, Martin Schneider, Bernd Flemisch +1
Flow in fractured porous media is of high relevance in a variety of geotechnical applications, given the fact that they ubiquitously occur in nature and that they can have a substa…
Surrogate-based Bayesian Comparison of Computationally Expensive Models: Application to Microbially Induced Calcite Precipitation
Stefania Scheurer, Aline Schäfer Rodrigues Silva, Farid Mohammadi +4
Geochemical processes in subsurface reservoirs affected by microbial activity change the material properties of porous media. This is a complex biogeochemical process in subsurface…
An Environment for Sustainable Research Software in Germany and Beyond: Current State, Open Challenges, and Call for Action
Hartwig Anzt, Felix Bach, Stephan Druskat +40
Research software has become a central asset in academic research. It optimizes existing and enables new research methods, implements and embeds research knowledge, and constitutes…
Verification benchmarks for single-phase flow in three-dimensional fractured porous media
Inga Berre, Wietse M. Boon, Bernd Flemisch +23
Flow in fractured porous media occurs in the earth's subsurface, in biological tissues, and in man-made materials. Fractures have a dominating influence on flow processes, and the…
DuMu 3 -- an open-source simulator for solving flow and transport problems in porous media with a focus on model coupling
Timo Koch, Dennis Gläser, Kilian Weishaupt +21
We present version 3 of the open-source simulator for flow and transport processes in porous media DuMu. DuMu is based on the modular C++ framework Dune (Dist…
Call for participation: Verification benchmarks for single-phase flow in three-dimensional fractured porous media
Inga Berre, Wietse Boon, Bernd Flemisch +6
This call for participation proposes four benchmark tests to verify and compare numerical schemes to solve single-phase flow in fractured porous media. With this, the two-dimension…
An adaptive multiphysics model coupling vertical equilibrium and full multidimensions for multiphase flow in porous media
Beatrix Becker, Bo Guo, Karl Bandilla +3
Efficient multiphysics models that can adapt to the varying complexity of physical processes in space and time are desirable for modeling fluid migration in the subsurface. Vertica…
Benchmarks for single-phase flow in fractured porous media
Bernd Flemisch, Inga Berre, Wietse Boon +5
This paper presents several test cases intended to be benchmarks for numerical schemes for single-phase fluid flow in fractured porous media. A number of solution strategies are co…
The Dune FoamGrid implementation for surface and network grids
Oliver Sander, Timo Koch, Natalie Schröder +1
We present FoamGrid, a new implementation of the DUNE grid interface. FoamGrid implements one- and two-dimensional grids in a physical space of arbitrary dimension, which allows fo…
The Localized Reduced Basis Multiscale method for two-phase flows in porous media
Sven Kaulmann, Bernd Flemisch, Bernard Haasdonk +2
In this work, we propose a novel model order reduction approach for two-phase flow in porous media by introducing a formulation in which the mobility, which realizes the coupling b…