GAS-TRANSPORT IN POROUS-MEDIA - SIMULATIONS AND EXPERIMENTS ON PARTIALLY DENSIFIED AEROGELS

Authors
HASMY A BEURROIES I BOURRET D JULLIEN R
Citation
A. Hasmy et al., GAS-TRANSPORT IN POROUS-MEDIA - SIMULATIONS AND EXPERIMENTS ON PARTIALLY DENSIFIED AEROGELS, Europhysics letters, 29(7), 1995, pp. 567-572
Citations number
15
Categorie Soggetti
Physics
Journal title
Europhysics letters → ACNP
ISSN journal
02955075
Volume
29
Issue
7
Year of publication
1995
Pages
567 - 572
Database
ISI
SICI code
0295-5075(1995)29:7<567:GIP-SA>2.0.ZU;2-#
Abstract
The experimental density dependence of gas (argon and nitrogen) permea bility of partially densified silica aerogels in the Knudsen regime is quantitatively accounted for by a computer model. The model simulates both the structure of the sintered material and the random ballistic motion of a point particle inside its voids. The same model is also ab le to account for the density dependence of the specific pore surface as measured from nitrogen adsorption experiments.