Significance of Dynamic Capillary Pressure in Layered Soils

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F10%3A00170004" target="_blank" >RIV/68407700:21340/10:00170004 - 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
Significance of Dynamic Capillary Pressure in Layered Soils
Original language description
A one-dimensional fully-implicit numerical scheme is proposed to investigate the dynamic effect in the capillary pressure-saturation relationship used in the modelling of two-phase flow in porous media. The numerical scheme is used to simulate a laboratory experiment in a homogeneous column including three major models of the dynamic effect coefficient and the respective results are presented and discussed. The presented numerical scheme can handle porous medium heterogeneity and it is used to simulatea fictitious experimental setup with two different sands. Penetration time of air phase through layered porous medium for models including dynamic effects varied between 50% to 150% compared to static models of capillary pressure relationship and the accumulation time of air at a material interface is investigated as a function of the ratio between air-entry pressure values of the adjacent sands emphasizing the differences between the dynamic and static capillary pressure models.
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
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

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

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