Code and benchmarks for a vertically averaged drag term for pseudo-3D Stokes simulations

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Krach, David; Weinhardt, Felix; Class, Holger; Steeb, Holger; Schneider, Martin, 2026, "Code and benchmarks for a vertically averaged drag term for pseudo-3D Stokes simulations", https://doi.org/10.18419/DARUS-5624, DaRUS, V1
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Description
Content:
This data set includes snapshots of the code used to compute the benchmarks and applications in Krach et al (2026). The included software tools allow users to conduct pseudo-3D Stokes simulations with a geometry-informed drag term as well as analytical drag terms using DuMux. Users can determine permeability, volumetric flux, and local pressure and velocity fields for both the geometries featured in the publication and custom-defined domains.


Pseudo3D_Stokes: DuMuxsubmodule

Pseudo-3D-Stokes Module for Varying Apertures is a DuMux module developed within academic research. DuMux is a simulation toolkit specializing in Finite Volume discretization, multi-physics model coupling, and flow and transport processes in porous media. This module is designed to help researchers plan, optimize, or analyze microfluidic systems through easy-to-use numerical simulations tools based on the Stokes equations. It utilizes .pgm files as input to generate numerical grids. These files should contain 8-bit grayscale values representing the relative height of a microfluidic cell, which can be derived from microscopy images of microfluidic experiments using appropriate image processing techniques. Using the .pgm files, the python module localdrag (see below) may be used to create the suitable drag prefactor fields lambda1 and lambda2 or the user can choose the analytical drag formulation. For further details, refer to our publication (see below). Please check out the README for information on requirements, building DuMux including its submodule and examples.


localdrag: python preprocessing module

localdrag is a python module that generates geometry-informed prefactor maps for pseudo-3D Stokes simulations in DuMux, based on local pore morphology. It serves as a preprocessing tool for the DuMux module pseud3D_stokes and is automatically included when pseudo3D_stokes is cloned with the recurse-submodules option (recommended, see README).


Related datasets and repositories:
Subject Computer and Information Science; Earth and Environmental Sciences; Engineering
Keyword Porous Medium, Porous Media, Research Software, Permeability, Microfluidics, Biomineralization
Related Publication Is Supplement To: Krach, D., Weinhardt, M., Class, H., Steeb, H., M., Schneider (2026). Rigorous vertical averaging for pseudo-3D modeling of precipitation obstructed fluid flow. (To be submitted).
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localdrag.tar.gz
Gzip Archive - 73.0 KB
Published Mar 24, 2026
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MD5: 851b326e14a0f7ce73fe3d3da2b1d1ab
Localdrag python preprocessing tool for heterogeneous pore space
pseudo3D_stokes.tar.gz
Gzip Archive - 8.2 MB
Published Mar 24, 2026
4 Downloads
MD5: e351715deb3641d7e5e259be70593893
Pseudo3D Dumux module for vertically averaged Stokes flow
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The research software (*.py) in this dataset is licensed under the MIT License.
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Curation Status History
StatusDateAssigner
2026-03-24 07:05:08Hamza Oukili
In Review by FoKUS2026-03-24 06:48:51Dorothea Iglezakis
Waiting for Feedback from Author2026-03-17 14:00:54Dorothea Iglezakis
In Review by FoKUS2026-03-13 14:50:05Dorothea Iglezakis
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