Upscaling of Soil
Hydraulic Properties by Homogenization Theory
Rosangela Sviercoski
Abstract:
Unsaturated
flow is a very important component in the study of many large-scale
hydrological and environmental processes, such as water balance issues,
estimation of surfaces fluxes for the soi-vegetation-atmospheric
models. The hydrologic properties of the
unsaturated zone often exhibit high degrees of spatial variability over a range
of scales because of the heterogeneous nature of geologic formations. Hydraulic property upscaling
is a process that incorporates a mesh of hydraulic property that can be used in
large-scale simulations. In this talk, I
will be presenting the method of homogenization, by using assymptotic
analysis theory, which leads us to develop an analytical expression for an upscaled version of the flow through heterogeneous porous
media.