Significance of Dynamic Capillary Pressure in Layered Soils

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Significance of Dynamic Capillary Pressure in Layered Soils

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Significance of Dynamic Capillary Pressure in Layered Soils

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BA - Obecná matematika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2010

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Vadose Zone Journal

ISSN

1539-1663

e-ISSN

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Svazek periodika

9

Číslo periodika v rámci svazku

9

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

12

Strana od-do

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Kód UT WoS článku

000284058700018

EID výsledku v databázi Scopus

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