Stochastic Reconstruction of Porous Media and Evaluation of Their Effective Transport Properties

Kód výsledku v IS VaVaI

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Nalezeny alternativní kódy

RIV/67985858:_____/13:00394205

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Stochastic Reconstruction of Porous Media and Evaluation of Their Effective Transport Properties

Popis výsledku v původním jazyce

The performance of a recently proposed reconstruction method, based on simulated annealing, was evaluated by calculating the effective ordinary and Knudsen diffusivities. The validation procedure involved a set of three porous solids with total porosityvarying from 0.178 to 0.322. Each digitised pore structure was thoroughly characterised by counting clusters of the void and solid voxels and by using the local porosity theory. The characterisation showed that the new method was capable of reproducing each phase in the form of a large percolating cluster and a few small non-percolating clusters, even for low-porosity media. This feature of the new method strongly contrasted with the common method of stochastic reconstruction based on simulated annealing, which resulted in replicas with poor pore space connectivity. For estimating effective ordinary and Knudsen diffusivity tensors, methods based upon simulating the Brownian motion of a diffusing particle were chosen. A direct comparison

Název v anglickém jazyce

Stochastic Reconstruction of Porous Media and Evaluation of Their Effective Transport Properties

Popis výsledku anglicky

The performance of a recently proposed reconstruction method, based on simulated annealing, was evaluated by calculating the effective ordinary and Knudsen diffusivities. The validation procedure involved a set of three porous solids with total porosityvarying from 0.178 to 0.322. Each digitised pore structure was thoroughly characterised by counting clusters of the void and solid voxels and by using the local porosity theory. The characterisation showed that the new method was capable of reproducing each phase in the form of a large percolating cluster and a few small non-percolating clusters, even for low-porosity media. This feature of the new method strongly contrasted with the common method of stochastic reconstruction based on simulated annealing, which resulted in replicas with poor pore space connectivity. For estimating effective ordinary and Knudsen diffusivity tensors, methods based upon simulating the Brownian motion of a diffusing particle were chosen. A direct comparison

Druh

D - Stať ve sborníku

CEP obor

CC - Organická chemie

OECD FORD obor

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Projekt

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Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

e-Book Full Papers

ISBN

9783950353709

ISSN

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e-ISSN

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Počet stran výsledku

16

Strana od-do

945-960

Název nakladatele

Vienna University of Technology

Místo vydání

Vienna

Místo konání akce

Vienna

Datum konání akce

10. 9. 2012

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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