Permeability calculation in composite media with low filler concentration: A new method of effective media theory application

摘要

A new method was established to calculate the intrinsic or effective permeability in composite media with low filler concentrations. The calculation instability of Bruggeman effective media theory was avoided through a media reconstruction, and thus the prediction accuracy and calculation consistence were greatly improved. The established method has been tested in Fe/SiO_2 based composite media, and its validity been preliminarily proved. This study then proposed a new way to extend the applicability scope of the Bruggeman effective media theory.