Uncovering asymmetrical mass transfer in layered porous media: Insights from pore-scale analysis

X Zhang, Z Dou, Z Chen, W Zhu, J Wang, Z Zhou - Journal of Hydrology, 2023 - Elsevier
Natural sediments or aquifers frequently exhibit layering and structural contrasts, which give
rise to anomalous mass transfer behavior. Moreover, the effects of the interface on mass …

[HTML][HTML] Modeling longitudinal dispersion in variable porosity porous media: Control of velocity distribution and microstructures

P Gouze, A Puyguiraud, T Porcher, M Dentz - Frontiers in Water, 2021 - frontiersin.org
Hydrodynamic dispersion process in relation with the geometrical properties of the porous
media are studied in two sets of 6 porous media samples of porosity θ ranging from 0.1 to …

Permeable biofilms can support persistent hyporheic anoxic microzones

Y Xian, M Jin, H Zhan, X Liang - Geophysical Research Letters, 2022 - Wiley Online Library
Experimental observations reveal the existence of anoxic microzones within oxygen‐rich
aquatic sediments. The microzones are hotspots of enhanced removal of nitrate and …

Velocity magnitude distribution for flow in porous media

VT Nguyen, DV Papavassiliou - Industrial & Engineering …, 2021 - ACS Publications
Transport in porous media is dominated not only by the average fluid velocity but also by the
local fluid velocities. In this study, a computational approach was used to investigate the …

Identification of channeling in pore‐scale flows

M Siena, O Iliev, T Prill, M Riva… - Geophysical Research …, 2019 - Wiley Online Library
We quantify flow channeling at the microscale in three‐dimensional porous media. The
study is motivated by the recognition that heterogeneity and connectivity of porous media …

Nonparametric, data-based kernel interpolation for particle-tracking simulations and kernel density estimation

DA Benson, D Bolster, S Pankavich… - Advances in Water …, 2021 - Elsevier
Traditional interpolation techniques for particle tracking include binning and convolutional
formulas that use pre-determined (ie, closed-form, parameteric) kernels. In many instances …

The feedback interaction between biomass accumulation and heterogeneous flow in porous media: Effect of shear stresses

D Ke, R Li, C Liu - Journal of Hydrology, 2021 - Elsevier
Bioclogging, resulting from excess biomass growth in porous media, can influence flow,
solute transport, and biogeochemical reactions in natural and remedial subsurface systems …

A seemingly universal particle kinetic distribution in porous media

D Fan, R Pini, A Striolo - Applied Physics Letters, 2021 - pubs.aip.org
We study many-particle transport in randomly jammed packing of spheres at different
particle Péclet numbers (⁠ P e*⁠). We demonstrate that a modified Nakagami-m function …

[HTML][HTML] Recent advances in anomalous transport models for predicting contaminants in natural groundwater systems

D Bolster, KR Roche, VL Morales - Current Opinion in Chemical …, 2019 - Elsevier
High degrees of spatial heterogeneity in hydrologic systems pose a major barrier for their
protection and remediation. Dissolved and particulate contaminants are mixed and retained …

The effect of biofilms on turbulent flow over permeable beds

F Kazemifar, G Blois, M Aybar… - Water Resources …, 2021 - Wiley Online Library
Despite an increasingly large body of work advancing our understanding of flow interactions
occurring at the interface of a turbulent flow overlying a permeable bed, little is known …