Experimental Investigation of Preferential Flow in a Near-Saturated Intact Soil Sample

Kód výsledku v IS VaVaI

RIV/68407700:21110/15:00230814 - isvavai.cz

Nalezeny alternativní kódy

RIV/68407700:21720/15:00230814

Výsledek na webu

http://www.sciencedirect.com/science/article/pii/S187538921500680X

DOI - Digital Object Identifier

10.1016/j.phpro.2015.07.070

Jazyk výsledku

angličtina

Název v původním jazyce

Experimental Investigation of Preferential Flow in a Near-Saturated Intact Soil Sample

Popis výsledku v původním jazyce

Hydraulic conductivity in an intact sample of coarse sandy loam from the Cambisol series containing a naturally developed, vertically connected macropore was investigated during a recurrent ponding infiltration (RPI) experiment performed over a period of30 hours, in combination with neutron tomography imaging. The RPI experiment consisted of two consecutive ponded infiltration runs, each followed by free gravitational draining of the sample. Three-dimensional neutron tomography (NT) imaging of the drysample was acquired before the infiltration began. The dynamics of the advancement of the wetting front was investigated using a sequence of neutron radiography (NR) images. Analysis of these images showed that the water front moved preferentially through the macropore at an approximate speed of 2 mm/s, significantly faster than the 0.3 mm/s wetting advancement in the surrounding soil matrix. After outflow started temporal changes in the local water content distribution were evaluated qu

Název v anglickém jazyce

Experimental Investigation of Preferential Flow in a Near-Saturated Intact Soil Sample

Popis výsledku anglicky

Hydraulic conductivity in an intact sample of coarse sandy loam from the Cambisol series containing a naturally developed, vertically connected macropore was investigated during a recurrent ponding infiltration (RPI) experiment performed over a period of30 hours, in combination with neutron tomography imaging. The RPI experiment consisted of two consecutive ponded infiltration runs, each followed by free gravitational draining of the sample. Three-dimensional neutron tomography (NT) imaging of the drysample was acquired before the infiltration began. The dynamics of the advancement of the wetting front was investigated using a sequence of neutron radiography (NR) images. Analysis of these images showed that the water front moved preferentially through the macropore at an approximate speed of 2 mm/s, significantly faster than the 0.3 mm/s wetting advancement in the surrounding soil matrix. After outflow started temporal changes in the local water content distribution were evaluated qu

Druh

D - Stať ve sborníku

CEP obor

JN - Stavebnictví

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)
S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Physics Procedia

ISBN

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ISSN

1875-3892

e-ISSN

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Počet stran výsledku

7

Strana od-do

496-502

Název nakladatele

Elsevier

Místo vydání

Amsterdam

Místo konání akce

Grindelwald

Datum konání akce

5. 10. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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