Modeling transverse dispersion and variable density flow in porous media

HM Nick, R Schotting, M Gutierrez-Neri… - Transport in porous …, 2009 - Springer
A two-dimensional numerical model is used to study the nonlinear behavior of density
gradients on transverse dispersion. Numerical simulations are conducted using d 3 f, a …

Microscale modeling of nondilute flow and transport in porous medium systems

TM Weigand, CT Miller - Physical Review E, 2020 - APS
Nondilute transport occurs routinely in porous medium systems. Experimental observations
have revealed effects that seemingly depend upon density, viscosity, velocity, and chemical …

Nonlinear random-walk approach to concentration-dependent contaminant transport in porous media

A Zoia, C Latrille, A Cartalade - Physical Review E—Statistical, Nonlinear, and …, 2009 - APS
We propose a nonlinear random-walk model to describe the dynamics of dense contaminant
plumes in porous media. A coupling between concentration and velocity fields is found so …

Spatial and temporal features of density-dependent contaminant transport: Experimental investigation and numerical modeling

A Zoia, C Latrille, A Beccantini, A Cartadale - Journal of contaminant …, 2009 - Elsevier
We investigate the spatial and temporal features of variable-density contaminant plumes
migration in porous materials. Our analysis is supported by novel experimental results …

On the Use of Entropy Production to Improve Mathematical Models and Numerical Methods for Non-Dilute Flow and Transport in Porous Media

TM Weigand - 2020 - search.proquest.com
Non-dilute flow and transport in porous media plays an important role in many natural and
engineered systems, however a mature understanding is lacking. As environmental …

Осредненное описание процессов разноплотностной фильтрации и массопереноса. 1. Уровень пор

ДЕ Демидов, АГ Егоров - Ученые записки Казанского …, 2005 - cyberleninka.ru
Проводится строгий вывод макроскопических уравнений, описывающих сопряженные
процессы фильтрации и массопереноса разноплотностной жидкости в устойчивой …

[PDF][PDF] Density-dependent dispersion in heterogeneous porous media Part II: Comparison with nonlinear theories

AJLR Schottingb, A Egorov, D Demidovc - Citeseer
In this paper, a comparison is given between the results of a series of high-resolution
numerical experiments and two nonlinear theories for high-concentration-gradient …

[PDF][PDF] Modeling density dependent transversal dispersion in porous media

W Sommer - 2008 - repository.tudelft.nl
Both theoretical and experimental studies have shown that under highdensity-gradient
conditions linear Ficks' law for dispersion is not valid. It is suggested that in cases of high …