Effective Diffusivities of Gases in a Reconstructed Porous Body
The result's identifiers
Result code in 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>
Alternative codes found
RIV/67985858:_____/08:00315769 RIV/61388955:_____/08:00315769
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
čeština
Original language name
Effective Diffusivities of Gases in a Reconstructed Porous Body
Original language description
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.
Czech name
Effective Diffusivities of Gases in a Reconstructed Porous Body
Czech description
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.
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CI - Industrial chemistry and chemical engineering
OECD FORD branch
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Result continuities
Project
<a href="/en/project/GA203%2F05%2F0347" target="_blank" >GA203/05/0347: Porous Catalysts and Membrane Supports: A Relationship Between Mass Transport and Textural Properties</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2008
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Chemical Engineering Research and Design - Part A
ISSN
0263-8762
e-ISSN
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Volume of the periodical
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Issue of the periodical within the volume
86
Country of publishing house
GB - UNITED KINGDOM
Number of pages
10
Pages from-to
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UT code for WoS article
000258545800007
EID of the result in the Scopus database
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