A generalization of the Renormalization Group, which describes order-parameter fluctuations in finite systems, is developed in the specific context of percolation. This “Stochastic Renormalization Group” (SRG) expresses statistical self-similarity through a non-stationary branching process....

We study the statistical properties of fluid flows in percolation porous media at very low Reynolds number by numerical simulations for 20,000 different configurations. It is shown that there are some important differences between fluid flows in macroscopically homogeneous and fractal porous...

Optical and electrical properties of inhomogeneous media, strongly depend on the percolating properties of one of the component. In many cases, inhomogeneous media present fractal structures near and at the percolation threshold, and in general, transport properties exhibit a very special...