Details zur Publikation |
| Kategorie | Textpublikation |
| Referenztyp | Zeitschriften |
| DOI | 10.5194/gmd-19-3923-2026 |
Lizenz  |
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| Titel (primär) | darcyInterTransportFoam v1.0: an open-source, fully-coupled 3D solver for simulating surface water – saturated groundwater processes and exchanges |
| Autor | Pardo-Álvarez, A.; Fleckenstein, J.H.; Koutantou, K.; Brunner, P. |
| Quelle | Geoscientific Model Development |
| Erscheinungsjahr | 2026 |
| Department | HDG |
| Band/Volume | 19 |
| Heft | 9 |
| Seite von | 3923 |
| Seite bis | 3951 |
| Sprache | englisch |
| Topic | T5 Future Landscapes |
| Daten-/Softwarelinks | https://doi.org/10.5281/zenodo.15857296 https://doi.org/10.5281/zenodo.16283559 https://doi.org/10.5281/zenodo.17092721 |
| Supplements | Supplement 1 |
| Abstract | Fully-coupled
solvers have proven to be suitable and computationally efficient tools
for studying surface water–groundwater (SW-GW) interactions. Most
existing fully-coupled codes use the two-dimensional, depth-averaged
shallow water equations for surface flows. As a result,
three-dimensional (3D) flow dynamics are ignored in the surface domain,
including phenomena important for the SW-GW exchange such as turbulence.
Computational Fluid Dynamics (CFD) solvers allow to capture 3D
information on the surface turbulent flow by solving the full
Navier-Stokes equations. Consequently, they are well-suited for the
study of the actual exchange flows of water and solutes across the
sediment-water interface. Among the available CFD software, the
open-source toolbox OpenFOAM provides a flexible modelling framework to
implement user-defined, fully-coupled models for the detailed
investigation of SW-GW interaction processes. Based on this CFD
platform, Lee et al. (2021) developed hyporheicScalarInterFoam, a
fully-coupled 3D solver capable of solving the flow and transport
processes in both surface and subsurface domains as well as the
interactions across their interface. Despite the potential of this new
code to tackle SW-GW interactions, its application to real-world
hydrogeological scenarios is constrained by limitations in boundary
conditions, parameter heterogeneity and key hydrodynamic and transport
processes, among others, which hinder the accurate representation of the
complex characteristics of natural systems. To overcome this, an
updated and extended version of hyporheicScalarInterFoam, called
darcyInterTransportFoam, is presented in this paper. The new
fully-coupled solver enhances the applicability of the original by
introducing novel simulation features. These include internal solver
updates, such as the definition of heterogeneous and anisotropic
subsurface fields and the simulation of heat transfer in both domains,
as well as newly implemented add-ons, including pre- and post-processing
utilities and additional boundary conditions. A complete description of
all the new features is provided in this paper. Moreover, the utility
of darcyInterTransportFoam is demonstrated in a test case, where the
SW-GW flow, solute transport and heat transfer processes are simulated
in a highly conductive river-aquifer system. |
| Pardo-Álvarez, A., Fleckenstein, J.H., Koutantou, K., Brunner, P. (2026): darcyInterTransportFoam v1.0: an open-source, fully-coupled 3D solver for simulating surface water – saturated groundwater processes and exchanges Geosci. Model Dev. 19 (9), 3923 - 3951 10.5194/gmd-19-3923-2026 |
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