A new coupled finite element model has been developed for the joint resolution of both the shallow water equations, that governs the free surface flow, and the groundwater flow equation that governs the motion of water through a porous media. The paper aims to discuss these issues.
The model is based upon two different modules (surface and ground water) previously developed by the authors, that have been validated separately.
The newly developed software allows for the assessment of the fluid flow in natural watersheds taking into account both the surface and the underground flow in the way it really takes place in nature.
The main achievement of this work has dealt with the coupling of both models, allowing for a proper moving interface treatment that simulates the actual interaction that takes place between surface and groundwater in natural watersheds.
This work has been partly funded by the Spanish Ministry of Education and Science (CICYT CGL2006-01452/HID and CGL 2009-11258) and the Private Company LIMEISA. The authors also want to express their gratitude to the Foundation of Civil Engineering of Galicia.
Rábade, H., Vellando, P., Padilla, F. and Juncosa, R. (2014), "A coupled FE model for the joint resolution of the shallow water and the groundwater flow equations", International Journal of Numerical Methods for Heat & Fluid Flow, Vol. 24 No. 7, pp. 1553-1569. https://doi.org/10.1108/HFF-05-2012-0123Download as .RIS
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