PREDICTION of EFFECTIVE MATERIAL PROPERTIES of POROUS MEDIA USING CROSS-PROPERTY RELATIONSHIPS
Porous medium is a two-phase medium. It is generally difficult to predict the effective material properties of such medium, since the effective material properties of such materials depend nonlinearly on the microgeometry of the materials. However, if one knows some effective physical properties of porous media, such as effective electrical conductivity, one can use the known effective electrical conductivity to predict the unknown effective thermal conductivity. Such relationship is known as the cross-property relationship. The purpose of this article is to predict the effective thermal conductivity using the knowledge of effective electrical conductivity (effective thermal conductivity at different temperature). In order to verify the accuracies of the predicted values using cross-property relationships, those predicted values are compared to the effective values obtained by finite volume simulation. Thus, it is to find out that the prediction using cross-property relationships give good results due to the contain of more microstructure information.