Use of volume averaging for the modeling of thermal properties of porous materials

Abstract The thermal conductivity and thermal diffusivity of single and two-phase materials were measured using the transient hot wire method. The mathematical basis for the use of this method for measurements on single phase materials is well documented. Thermal property measurements on two-phase materials are more complex to analyse than those of single phase materials. A mathematical model based on volume averaging was developed to predict measured values of the effective thermal properties of two-phase materials.

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