Transport in two-dimensional scattering stochastic media: Simulations and models

Classical transport of neutral particles in a purely scattering two-dimensi onal stochastic media is studied. Results of numerical Monte Carlo simulati ons of 'transport in two-dimensional stationary, binary, purely scattering stochastic media with Markovian mixing statistics are reported. Partial Mar kovian descriptions are proposed as models for the transport process inside the stochastic media. In these models, the composition of the media is cor related on a finite length scale. The results obtained from the models are in good agreement with the results obtained from the two-dimensional simula tions.