engleski

Modelling of an underground waste disposal site by upscaling

In this paper, we study the global behaviour of an underground waste disposal in order to have an accurate upscales model suitable for the computations involved in safety assessment processes. we start from a detailed model describing the transport of pollutant leaking from a high number of units. Using the method of homogenization. going to the limit, we obtain a macroscopic model where the sources are now appearing globally. Then we compute a first order matched asymptotic expansion and we give the error estimates for this approximation.

filtration law ; porous media ; homogenization ; transport of pollutant ; convection diffusion

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