An Adaptive Time Discretization to the Classical and the Dual Porosity Model of the Richards' Equation

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41330%2F10%3A19279" target="_blank" >RIV/60460709:41330/10:19279 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
An Adaptive Time Discretization to the Classical and the Dual Porosity Model of the Richards' Equation
Original language description
This paper presents a numerical solution to the equations describing Darcian flow in a variably saturated porous medium ? a classical Richards? equation model and an extension of it that approximates the flow in media with preferential paths - a dual porosity model. A numerical solver to this problem, the DRUtES computer program, was developed and released during our investigation. A new technique which maintains an adaptive time step, defined here as the Retention Curve Zone Approach, was constructed and tested. The aim was to limit the error of a linear approximation to the time derivative part. Finally, parameter identification was performed in order to compare the behavior of the dual porosity model with data obtained from a non-homogenized fracture and matrix flow simulation experiment.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BA - General mathematics
OECD FORD branch
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Project
<a href="/en/project/QH91247" target="_blank" >QH91247: Elimination of climate change impacts by increasing of storage capacity in the Rakovnický brook basin (case study)</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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