Glossary
Percolation of fluid in a porous material - Application to the pathology of constructions

Site Percolation

In site percolation, each site (or node) in a network or grid is occupied randomly with a certain probability. It is used to model phenomena such as the spread of an epidemic in a population or the resilience of communication networks.

Link (or Bond) Percolation

Unlike site percolation, link percolation focuses on the links (or edges) between sites. Links are occupied or unoccupied at random. This approach is often applied to the study of transportation networks or power grids.

Directed percolation

In directed percolation, links have a predefined direction, which creates asymmetry in connectivity. For example, one site may influence another site in one direction but not in the opposite direction. It is useful for studying diffusion processes with a preferred direction, such as water flow in an inclined porous medium or through a directional pressure...