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

Result code in 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>
Alternative codes found
RIV/68407700:21720/14:00222112
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
The water and air redistribution within the dual permeability porous system investigated by neutron imaging
Original language description
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
Czech name
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Czech description
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Project
<a href="/en/project/GA14-03691S" target="_blank" >GA14-03691S: Isothermal and non-isothermal water flow and solute transport in near-saturated porous media</a><br>
Continuities
S - Specificky vyzkum na vysokych skolach

Publication year
2014
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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