Effective Diffusivities of Gases in a Reconstructed Porous Body

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F08%3A00020044" target="_blank" >RIV/60461373:22310/08:00020044 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/67985858:_____/08:00315769 RIV/61388955:_____/08:00315769

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

čeština

Název v původním jazyce

Effective Diffusivities of Gases in a Reconstructed Porous Body

Popis výsledku v původním jazyce

Two models of a porous body, a 3D replica obtained by stochastic reconstruction and a random pore network, were evaluated with reference to the effective diffusivities of gases. Stochastic reconstruction was applied to statistical information extracted from images of 2D cuts through the porous medium. The pore network was derived in such a way that the total porosity, pore-size function, mean coordination number and mercury intrusion curve were all in good agreement with the experimental data. The simulator used to model steady diffusion flow in the pore network slightly overestimated effective diffusivity, while direct calculation of effective diffusivity, by using random-walk simulation in the 3D replica, delivered a value that was lower than its experimental counterpart. However, both deviations were within tolerable limits.

Název v anglickém jazyce

Effective Diffusivities of Gases in a Reconstructed Porous Body

Popis výsledku anglicky

Two models of a porous body, a 3D replica obtained by stochastic reconstruction and a random pore network, were evaluated with reference to the effective diffusivities of gases. Stochastic reconstruction was applied to statistical information extracted from images of 2D cuts through the porous medium. The pore network was derived in such a way that the total porosity, pore-size function, mean coordination number and mercury intrusion curve were all in good agreement with the experimental data. The simulator used to model steady diffusion flow in the pore network slightly overestimated effective diffusivity, while direct calculation of effective diffusivity, by using random-walk simulation in the 3D replica, delivered a value that was lower than its experimental counterpart. However, both deviations were within tolerable limits.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CI - Průmyslová chemie a chemické inženýrství

OECD FORD obor

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Projekt

<a href="/cs/project/GA203%2F05%2F0347" target="_blank" >GA203/05/0347: Pórovité katalyzátory a nosiče membrán: Vztah mezi transportem hmoty a texturními vlastnostmi</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Chemical Engineering Research and Design - Part A

ISSN

0263-8762

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

86

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

10

Strana od-do

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Kód UT WoS článku

000258545800007

EID výsledku v databázi Scopus

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