Using CT Determined Heterogeneity for 3D Modeling of Soil Water Flow

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F05%3A01116871" target="_blank" >RIV/68407700:21110/05:01116871 - 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
Using CT Determined Heterogeneity for 3D Modeling of Soil Water Flow
Original language description
This contribution aims at assessing the effect of different spatial-averaging/nodereduction procedures on the resulting simulated soil water fluxes. An attempt is made to estimate the threshold value of the involved averaging voxel/node distance at whichthe reduced CT data preserve sufficient information about the heterogeneity for the numerical experiments. Heterogeneous sandy loam soil from Korkusova Hut was subject to CT imaging. Node reduction techniques were proposed. The 3D distribution of the CT-derived porosity was than used for numerical modeling. Water flow through the heterogeneous soil sample was simulated by 3D model based on Richards' macroscopic concept. The results show that the procedures affect simulated water flux densities noticeably. Reducing the CT-acquired information in model input weakens the impact of heterogeneous structures and thus provides less realistic description of the flow in the soil under the study.
Czech name
3D modelování pohybu vody s využitím dat počítačové tomografie
Czech description
3D modelování pohybu vody s využitím dat počítačové tomografie

Project
<a href="/en/project/SA%2F650%2F5%2F03" target="_blank" >SA/650/5/03: Project Elbe IV</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2005
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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