A New Versatile Computer Programing Approach For Upscaling And Modeling Of Reactive Transport From Pore-Core-Large Darcy Scale Of (Variably) Saturated Porous Media.

Abstract

Groundwater processes are complex and include physical-chemical-biological and microbiological ones. In pore-core scale this is its infancy age.  Some of them needs to be provided first in pore-core scale. Since the experimental measurements are time-consuming and expensive, the use of numerically-simulated porous media is conceptually appealing. More over We need to upscale different parameter and coefficients from pore-core to large Darcy scale, for example the chemical reaction rates, dispersivity coefficients etc. In our knowledge, this the first attempt to write a computer program, being able to include pore-core-large scale phenomena as a whole system. We will make use to some existing packages making interface to them by our program. There is agreement by some others authors that if pore – core experiments are in good agreement with numerical modeling at this scale then there are good chances ore probability that this upgraded numerical models are the right ones for describing large scale models. But We also need to upgrade to these models first. Reactive contaminant transport in (variably) porous media are the most difficult processes to deal with them likely the atmospheric moving boundary conditions and rainfall- runoff ones.