3D modelování pohybu vody s využitím dat počítačové tomografie

Kód výsledku v 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>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

A - Audiovizuální tvorba

CEP obor

DA - Hydrologie a limnologie

OECD FORD obor

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Projekt

<a href="/cs/project/SA%2F650%2F5%2F03" target="_blank" >SA/650/5/03: Labe IV</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2005

Kód důvěrnosti údajů

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

ISBN

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Místo vydání

Katlenburg-Lindau

Název nakladatele resp. objednatele

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Verze

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Identifikační číslo nosiče

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