Estimaton of Effective Thermal Diffusivity of Porous Solid Using Data for Image Processing

Abstract

Many equations for the estimation of effective thermal diffusivity of porous solid were proposed previously. However, those equations do not always represent the correct effective thermal diffusivity of the porous solid, because of the complexity of the pore structure of the porous solid. Therefore, in this work, effective thermal diffusivity of porous iron was estimated by computer simulation of heat transfer in the porous iron using data of microstructure of the sample. The measurement of the effective thermal diffusivity of the sample by Laser Flash method was also carried out. The estimated results agreed well with the observed data.