Predictions of non-Fickian solute transport in different classes of porous media using direct simulation on pore-scale images
نویسندگان
چکیده
منابع مشابه
Predictions of non-Fickian solute transport in different classes of porous media using direct simulation on pore-scale images.
We present predictions of transport through micro-CT images of porous media that include the analysis of correlation structure, velocity, and the dynamics of the evolving plume. We simulate solute transport through millimeter-sized three-dimensional images of a beadpack, a sandstone, and a carbonate, representing porous media with an increasing degree of pore-scale complexity. The Navier-Stokes...
متن کاملPore scale simulation of solute transport in fractured porous media
[1] We investigate the effects of the porosity (and thus permeability) of porous matrix and the fracture aperture on transport in fractured porous media. We do so with detailed lattice Boltzmann simulations on constructed porous media with a single fracture. Both plume spatial moments (the average plume velocity and the dispersion coefficients) and mass transfer coefficients between the facture...
متن کاملSignature of non-Fickian solute transport in complex heterogeneous porous media.
We simulate transport of a solute through three-dimensional images of different rock samples, with resolutions of a few microns, representing geological media of increasing pore-scale complexity: a sandpack, a Berea sandstone, and a Portland limestone. We predict the propagators (concentration as a function of distance) measured on similar cores in nuclear magnetic resonance experiments and the...
متن کاملPore-scale simulation of fluid flow and solute dispersion in three-dimensional porous media.
In the present work fluid flow and solute transport through porous media are described by solving the governing equations at the pore scale with finite-volume discretization. Instead of solving the simplified Stokes equation (very often employed in this context) the full Navier-Stokes equation is used here. The realistic three-dimensional porous medium is created in this work by packing togethe...
متن کاملA hybrid multi-time-step framework for pore-scale and continuum-scale modeling of solute transport in porous media
Understanding transport processes in porous media is vital to many scientific and industrial applications. For instance, predicting the fate of chemical contaminants in subsurface, and simulating various processes in geological carbon-dioxide sequestration are two of the most prominent examples. Considering the dimensions of a typical spatial domain in such problems, usually in the order of kil...
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: Physical Review E
سال: 2013
ISSN: 1539-3755,1550-2376
DOI: 10.1103/physreve.87.013011