title: Stochastic reconstruction of sandstones
abstract: A simulated annealing algorithm is employed to generate a stochastic model for a Berea sandstone and a Fontainebleau sandstone, with each a prescribed two-point probability function, lineal-path function, and "pore size" distribution function, respectively. We find that the temperature decrease of the annealing has to be rather quick to yield isotropic and percolating configurations. A comparison of simple morphological quantities indicates good agreement between the reconstructions and the original sandstones. Also, the mean survival time of a random walker in the pore space is reproduced with good accuracy. However, a more detailed investigation by means of local porosity theory shows that there may be significant differences of the geometrical connectivity between the reconstructed and the experimental samples.
authors.affiliation: Institut fur Computeranwendungen 1, Universitat Stuttgart, 70569 Stuttgart, Germany.
authors.initials: C
authors.lastname: Manwart
authors.initials: S
authors.lastname: Torquato
authors.initials: R
authors.lastname: Hilfer