5. Conclusion

The various theoretical and practical approaches developed above enable us to obtain a coherent cross-check of the results of fluid percolation in a porous material, particularly with regard to directed percolation and the introduction of a contact process.

The medium can be characterized by its intrinsic porosity, and that accessible to the fluid, but also by the power of communication or connection between elementary pores, or clusters.

Formal analysis of a structure with this morphological (pores and clusters) and topological (connections between pores) complexity enables a generalized approach not only to 3-D percolation, but also to contamination as a function of the main parameters of accessible porosity, cluster distribution and contact cases.

The developments and results obtained highlight the importance...