Radon Emanation in Partially Saturated Porous Media | INSTITUT DE PHYSIQUE DU GLOBE DE PARIS

Twitter

Aller au compte twitter

  Radon Emanation in Partially Saturated Porous Media

Type de publication:

Journal Article

Source:

Transport in Porous Media, Volume 78, Ticket 2, p.149-159 (2009)

ISBN:

0169-3913

Numéro d'accès:

WOS:000266828000001

URL:

http://www.springerlink.com/content/1m22n4644u46v1n1/?MUD=MP

Mots-clés:

UMR 7154 ; Géomagnétisme ; N° Contribution : 2418

Résumé:

Radon emanation which is the fraction of radon-222 atoms released in the connected pore space of a porous material, increases when the water content increases because of the low recoil range of this atom in water compared with air. This complex phenomenon is studied using reconstructed porous media and random packings where the phase distribution is obtained by a lattice Boltzmann technique incorporating interfacial tension and wetting. The influence of the pore structure, of the recoil range and of saturation, is systematically studied. The numerical results are in good agreement with data from uranium mine tailings.