The water and air redistribution within the dual permeability porous system investigated by neutron imaging

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00222112" target="_blank" >RIV/68407700:21110/14:00222112 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68407700:21720/14:00222112

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

The water and air redistribution within the dual permeability porous system investigated by neutron imaging

Popis výsledku v původním jazyce

The ponded infiltration experiment was conducted to investigate variations of the quasi-saturated hydraulic conductivity, frequently observed in number of infiltration experiments on soils with wide grain size distribution. These variations cannot be simulated by current models of unsaturated flow in soil. An artificially prepared heterogeneous sample composed of coarse quartz sand and the fine porous ceramic was investigated. The sample was 34.5 mm high and its diameter was 29.0 mm. Neutron radiographic images (RI) with pixel size 0.045 x 0.045 mm were taken from different directions in small, successive steps all the way around (180°) the sample. This series of RI were used to reconstruct a 3D tomography image (TI). The data from neutron tomography were used for quantitative evaluation of the spatial distribution and time development of water content in the sample. For every RI and TI the change of the volume of water was calculated by subtracting the image of dry sample. Sixteen hou

Název v anglickém jazyce

The water and air redistribution within the dual permeability porous system investigated by neutron imaging

Popis výsledku anglicky

The ponded infiltration experiment was conducted to investigate variations of the quasi-saturated hydraulic conductivity, frequently observed in number of infiltration experiments on soils with wide grain size distribution. These variations cannot be simulated by current models of unsaturated flow in soil. An artificially prepared heterogeneous sample composed of coarse quartz sand and the fine porous ceramic was investigated. The sample was 34.5 mm high and its diameter was 29.0 mm. Neutron radiographic images (RI) with pixel size 0.045 x 0.045 mm were taken from different directions in small, successive steps all the way around (180°) the sample. This series of RI were used to reconstruct a 3D tomography image (TI). The data from neutron tomography were used for quantitative evaluation of the spatial distribution and time development of water content in the sample. For every RI and TI the change of the volume of water was calculated by subtracting the image of dry sample. Sixteen hou

Druh

O - Ostatní výsledky

CEP obor

DA - Hydrologie a limnologie

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-03691S" target="_blank" >GA14-03691S: Izotermické a neizotermické proudění vody a transport látek v pórovitém prostředí v blízkosti nasycení</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2014

Kód důvěrnosti údajů

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