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An open source massively parallel solver for Richards equation: Mechanistic modelling of water fluxes at the watershed scale

Orgogozo, Laurent and Renon, Nicolas and Soulaine, Cyprien and Hénon, Florent and Tomer, Sat K. and Labat, David and Pokrovsky, Oleg S. and Sekhar, Muddu and Ababou, Rachid and Quintard, Michel An open source massively parallel solver for Richards equation: Mechanistic modelling of water fluxes at the watershed scale. (2014) Computer Physics Communications Package, vol. 185 (n° 12). pp. 3358-3371. ISSN 0010-4655

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Official URL: http://dx.doi.org/10.1016/j.cpc.2014.08.004


In this paper we present a massively parallel open source solver for Richards equation, named the RichardsFOAM solver. This solver has been developed in the framework of the open source generalist computational fluid dynamics tool box OpenFOAM® and is capable to deal with large scale problems in both space and time. The source code for RichardsFOAM may be downloaded from the CPC program library website. It exhibits good parallel performances (up to ∼90% parallel efficiency with 1024 processors both in strong and weak scaling), and the conditions required for obtaining such performances are analysed and discussed. These performances enable the mechanistic modelling of water fluxes at the scale of experimental watersheds (up to few square kilometres of surface area), and on time scales of decades to a century. Such a solver can be useful in various applications, such as environmental engineering for long term transport of pollutants in soils, water engineering for assessing the impact of land settlement on water resources, or in the study of weathering processes on the watersheds.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Computer Physics Communications website : http://www.sciencedirect.com/science/journal/00104655
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National des Etudes Spatiales - CNES (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Other partners > Indian Institute of Science - IISC (INDIA)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut de Recherche pour le Développement - IRD (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Other partners > Tomsk State University - TSU (RUSSIA)
Laboratory name:
Deposited By: Michel QUINTARD
Deposited On:23 Oct 2014 07:08

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