Fractal models for the effective thermal conductivity of bidispersed porous media

Two fractal models for determination of the effective thermal conductivity of bidispersed porous media are developed based on the fractal theory and electrical analogy technique. The theoretical predictions from the proposed fractal thermal conductivity models are compared with those from the previous lumped-parameter model and from experimental data. The results from the proposed fractal models are shown to be in good agreement with both the lumped-parameter model and the experimental data.