English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

To predict the effective diffusion coefficient of a porous material, a theoretical equation was derived by using a pore model. However, it cannot be applied to a granular bed of single pore structure. From this point of view, the tortuosity factor is introduced into the expression of the effective diffusion coefficient and calculated from penetration experiments of gas in porous materials. As a result, for a granular bed, in the region of large void fraction, the effective diffusion coefficient may be estimated by the presented equation. It may be applied to the diffusion of gas in porous materials.

EFFECTIVE DIFFUSION COEFFICIENT OF GAS IN POROUS MATERIALS AND GRANULAR BEDS