TY - JOUR TI - Numerical approach to simulate diffusion model of a fluid-flow in a porous media AU - Aghdam Yones Esmaeelzade AU - Farnam Behnaz AU - Jafari Hosein JN - Thermal Science PY - 2021 VL - 25 IS - 102 SP - 255 EP - 261 PT - Article AB - When a particle distributes at a rate that deviates from the classical Brownian motion model, fractional space derivatives have been used to simulate anomalous diffusion or dispersion. When a fractional derivative substitutes the second-order derivative in a diffusion or dispersion model, amplified diffusion occurs (named super-diffusion). The proposed approach in this paper allows seeing the physical background of the newly defined Caputo space-time-fractional derivative and indicates that the order of convergence to approximate such equations has increased.