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A statistical characterization for porous media structures


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Titre du congrès :21st Conference of Mechanical Engineering Network of Thailand Ville du congrès :Pattaya Date du congrès :17/10/2007

Type de document > *Congrès/colloque

Mots clés > coeur de réacteur, courbure, fonction de distribution, milieu poreux, tomographie

Unité de recherche > IRSN/DPAM/SEMCA/LESAM

Auteurs > FICHOT Florian, MEEKUNNASOMBAT Phongsan

Date de publication > 17/10/2007

Résumé

Some porous media structures may appear complicated at first glance. With proper treatment, these structures may be simplified and characterized for further analysis. In this paper, a method to statistically characterize the structure of porous media is presented. Tomography images of severely damaged nuclear reactor core are used as samples to develop the proposed method. It is found that void size and particle size distributions of the samples can be obtained. These distributions appear to be good representations of the damage degree of the corresponding locations. They may be fitted by the sum of standard beta distribution function which are easier to use for a physical and mathematical modelling of such porous structure. It is expected that this method can also be applied to different types of porous structures in other applications.