Draft:OpenGeoSys
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OpenGeoSys (OGS) is an open-source scientific software for the numerical simulation of coupled thermo-hydro-mechanical-chemical (THMC) processes in porous and fractured media.[1]
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| OpenGeoSys | |
|---|---|
| Developer | OpenGeoSys Community |
| Written in | C++ |
| Operating system | Linux, Windows, macOS |
| Type | Scientific software |
| License | BSD License |
| Website | www |
The software is based on the finite element method and is used in hydrogeology, geotechnical engineering, geothermal energy, and environmental sciences.[2]
History
The origins of OpenGeoSys date back to the mid-1980s, when numerical simulation tools for coupled processes in geosciences were developed.[1] An early predecessor was the software RockFlow, which was initiated following a request from the German Federal Institute for Geosciences and Natural Resources (BGR) to simulate flow processes in fractured rock systems.[1]
Early implementations were written in Fortran and later evolved into modular simulation tools coupled via file-based interfaces.[1] In the late 1990s, the software was reimplemented in the C programming language to improve computational efficiency and flexibility, followed by a transition to C++ and object-oriented design.[1]
This development resulted in GeoSys/RockFlow and later OpenGeoSys, which combined multi-physics capabilities with a unified simulation framework.[1]
Subsequent versions (OpenGeoSys 4 and 5) were widely used in research applications. A major redevelopment led to OpenGeoSys 6 (OGS-6), which introduced a modern C++ code base, improved modularity, and enhanced support for high-performance computing.[2]
Benchmarking and validation have been central elements of the project since its early stages.[1]
Technology
OpenGeoSys is based on the finite element method and is designed to simulate coupled multi-physics processes in porous and fractured media.[1]
Supported processes include:
- Groundwater flow in saturated and unsaturated systems
- Heat transport and geothermal processes
- Mechanical deformation of porous media
- Reactive transport and geochemical processes
The software is implemented in C++ and supports parallel computing using high-performance computing techniques such as MPI.[2] It uses standard scientific data formats such as VTK for input and output.
Applications
OpenGeoSys has been applied in a wide range of scientific and engineering contexts.
Applications include the simulation of thermo-hydro-mechanical-chemical processes in porous media, such as geothermal energy systems and subsurface energy applications. [3]
OpenGeoSys has been used in international benchmark studies for coupled processes, including comparisons with other simulation codes in initiatives such as DECOVALEX.[4] The software has also been applied to geothermal reservoir simulations and non-isothermal multi-phase flow problems.[5] The developments also include advances in reactive transport modeling in porous media.[6] In addition, OpenGeoSys has been used in hydrological modeling studies through coupling with the mesoscale hydrologic model mHM.[7]
Community and benchmarking
The OpenGeoSys community maintains benchmark collections and reference problems, including the publication of benchmark studies and books.[8]
Related software
Other software used for subsurface and groundwater simulation includes:
- FEFLOW
- MODFLOW
- TOUGH2
- HydroGeoSphere
- DuMux
- COMSOL Multiphysics
External links
- Official website
- Official source code: OpenGeoSys GitLab repository