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Partially saturated oscillatory flow under tidal conditions in homogeneous and layered soil columns (experiment and simulations)

Alastal, Khalil and Ababou, Rachid and Astruc, Dominique Partially saturated oscillatory flow under tidal conditions in homogeneous and layered soil columns (experiment and simulations). (2011) In: 2nd Coastal and Maritime Mediterranean Conference (CM2), 22 November 2011 - 24 November 2011 (Tangier, Morocco).

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Official URL: http://dx.doi.org/10.5150/cmcm.2011.024

Abstract

Surface/subsurface flow interactions concern a wide range of applications, from beach morphodynamics (swash zone), coastal aquifers (seawater intrusion and tidal effects), to harbour engineering and hydrology (e.g., man-made structures such as porous dykes and earth dams). The aim of this paper is to study numerically and experimentally the oscillatory flow in a sandy beach under tidal/low frequency forcing. In this short paper, we only describe the principle of the experiments, and then we focus on numerical simulations and analysis. For the numerical simulation, we use Richards's equation for variably saturated/unsaturated flow in a 1D porous column, with oscillatory pressure boundary conditions at the bottom of the column. Numerical simulations and analyses are conducted for the following cases: (1) homogeneous column, (2) heterogeneous 2-layer column (currently being extended to other heterogeneities).

Item Type:Conference or Workshop Item (Paper)
Audience (conference):International conference proceedings
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Rachid ABABOU
Deposited On:08 Jan 2014 15:51

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