A coupled FE model for the joint resolution of the shallow water and the groundwater flow equations

H.G. Rábade (Water and Environmental Engineering Group (GEAMA), ETS de Ingenieros de Caminos, University of La Coruña, La Coruña, Spain)
P. Vellando (Water and Environmental Engineering Group (GEAMA), ETS de Ingenieros de Caminos, University of La Coruña, La Coruña, Spain)
F. Padilla (Water and Environmental Engineering Group (GEAMA), ETS de Ingenieros de Caminos, University of La Coruña, La Coruña, Spain)
R. Juncosa (Water and Environmental Engineering Group (GEAMA), ETS de Ingenieros de Caminos, University of La Coruña, La Coruña, Spain)

International Journal of Numerical Methods for Heat & Fluid Flow

ISSN: 0961-5539

Publication date: 26 August 2014

Abstract

Purpose

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.

Design/methodology/approach

The model is based upon two different modules (surface and ground water) previously developed by the authors, that have been validated separately.

Findings

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.

Originality/value

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.

Keywords

Acknowledgements

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.

Citation

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-05-2012-0123

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Publisher

:

Emerald Group Publishing Limited

Copyright © 2014, Emerald Group Publishing Limited

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