VLIV REZOLUCE CT DAT A PROSTOROVÉHO PRŮMĚROVÁNÍ NA PROUDĚNÍ VODY V 3D HETEROGENNÍM PÓROVITÉM SYSTÉMU

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F04%3A01104913" target="_blank" >RIV/68407700:21110/04:01104913 - 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

Effect of CT image resolution and spatial averaging on three-dimensional heterogeneous water flow

Popis výsledku v původním jazyce

This contribution aims at evaluating different degree of soil sample heterogeneity with emphasis on resulting water fluxes. Sandy loam soil from Korkusova Hut was subject to CT imaging with high resolution. The three-dimensional distribution of CT-derived porosity within the sample was used in numerical experiments. Voxel porosity was employed for the calculation of the distribution of hydraulic conductivity scaling factor. Water flow through the heterogeneous soil sample was simulated by 3D model basedon Richards' macroscopic concept. From our simulations, it follows that the spatial averaging is less appropriate technique, since it alters significantly the original CT data. Generally, 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

Effect of CT image resolution and spatial averaging on three-dimensional heterogeneous water flow

Popis výsledku anglicky

This contribution aims at evaluating different degree of soil sample heterogeneity with emphasis on resulting water fluxes. Sandy loam soil from Korkusova Hut was subject to CT imaging with high resolution. The three-dimensional distribution of CT-derived porosity within the sample was used in numerical experiments. Voxel porosity was employed for the calculation of the distribution of hydraulic conductivity scaling factor. Water flow through the heterogeneous soil sample was simulated by 3D model basedon Richards' macroscopic concept. From our simulations, it follows that the spatial averaging is less appropriate technique, since it alters significantly the original CT data. Generally, 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

DF - Pedologie

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

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2004

Kód důvěrnosti údajů

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

ISBN

80-89139-05-1

Místo vydání

Bratislava

Název nakladatele resp. objednatele

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Verze

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Identifikační číslo nosiče

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