@Article{CiCP-17-1019,
author = {Gaojie Liu and Zhaoli Guo},
title = {Pore-Scale Study of the Non-Linear Mixing of Fluids with Viscous Fingering in Anisotropic Porous Media},
journal = {Communications in Computational Physics},
year = {2018},
volume = {17},
number = {4},
pages = {1019--1036},
abstract = {<p style="text-align: justify;">Mixing processes of miscible viscous fluids in anisotropic porous media are
studied through a lattice Boltzmann method in this paper. The results show that fluid
mixing can be enhanced by the disorder and interfaces induced by viscous fingers.
Meanwhile, the permeability anisotropy affects the developments of viscous fingers
and the subsequent mixing behaviors significantly. Specifically, as the streamwise (longitudinal)
permeability is larger than the spanwise (transverse) one, the mixing process
is faster and stronger than that in the contrary case. Furthermore, the anisotropy
can lead to different behaviors of the dissipation rates in streamwise and spanwise
directions. Generally, the dissipation rate is dominated by the transverse concentration
gradients when the longitudinal permeability is higher than the transverse one;
on the contrary, as the transverse permeability is higher than the longitudinal one, the
contributions to the dissipation rate from longitudinal and transverse concentration
gradients are both significant.</p>},
issn = {1991-7120},
doi = {https://doi.org/10.4208/cicp.2014.m347},
url = {http://global-sci.org/intro/article_detail/cicp/10999.html}
}