A fractional diffusion equation for a marker in porous media
G. Erochenkova, Ricardo D. F. Lima · Chaos An Interdisciplinary Journal of Nonlinear Science · 2001
To study the properties of the flow of a marker through an irregular packed bed, porosity is described by stochastic processes with exponentially decaying correlation functions. We show that the ensemble average concentration of the marker satisfies a fractional diffusion equation. (c) 2001 American Institute of Physics.