Upscaling of anisotropy in unsaturated Miller-similar porous media
نویسندگان
چکیده
منابع مشابه
Multilevel Upscaling in Heterogeneous Porous Media
The multiscale structure of heterogeneous porous media prevents a straightforward numerical treatment of the underlying mathematical ow models. In particular, fully resolved ow simulations are intractable and yet the ne-scale structure of a porous medium may signiicantly innuence the coarse-scale properties of the solution (e.g., average ow rates). Consequently, homogenization or upscaling proc...
متن کاملRadiation in Porous Media: an Upscaling Methodology
The radiative properties of any porous medium are statistically defined by a cumulated extinction distribution function, a cumulated absorption probability and a bidirectional phase function. These functions are obtained by a Monte Carlo technique, from both the medium morphology data, known or issued from a X or γ ray tomography, and the radiative properties at a scale lower than the tomograph...
متن کاملElectrokinetic coupling in unsaturated porous media.
We consider a charged porous material that is saturated by two fluid phases that are immiscible and continuous on the scale of a representative elementary volume. The wetting phase for the grains is water and the nonwetting phase is assumed to be an electrically insulating viscous fluid. We use a volume-averaging approach to derive the linear constitutive equations for the electrical current de...
متن کاملUpscaling and reversibility of Taylor dispersion in heterogeneous porous media.
Tracer flow in stratified porous media is dominated by the interaction between convective transport and transverse diffusive mixing. By averaging the tracer concentration in the transverse direction, a one-dimensional non-Fickian dispersion model is derived. The model accounts for the relaxation process that reduces the convective transport to dispersive mixing. This process is (short-) time co...
متن کاملExact Upscaling of Transport in Porous Media and Its Applications
In this work I consider the exact upscaling of the transport in layered porous media. Some applications of the upscaled equation is discussed.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Water Resources Research
سال: 2000
ISSN: 0043-1397
DOI: 10.1029/1999wr900320