Trends, prospects and challenges in quantifying flow and transport through fractured rocks

SP Neuman - Hydrogeology Journal, 2005 - Springer
Among the current problems that hydrogeologists face, perhaps there is none as
challenging as the characterization of fractured rock (Faybishenko and Benson 2000). This …

Stochastic fractal‐based models of heterogeneity in subsurface hydrology: Origins, applications, limitations, and future research questions

FJ Molz, H Rajaram, S Lu - Reviews of Geophysics, 2004 - Wiley Online Library
Modern measurement techniques have shown that property distributions in natural porous
and fractured media appear highly irregular and nonstationary in a spatial statistical sense …

Anomalous transport in laboratory‐scale, heterogeneous porous media

B Berkowitz, H Scher… - Water Resources Research, 2000 - Wiley Online Library
We analyze measured breakthrough curves in a laboratory model which consists of a
uniformly heterogeneous porous medium; these curves were previously shown to be …

On characterization of anomalous dispersion in porous and fractured media

B Berkowitz, H Scher - Water Resources Research, 1995 - Wiley Online Library
A key characterization of dispersion in aquifers and other porous media has been to map the
effects of inhomogeneous velocity fields onto a Fickian dispersion term (D) within the context …

Flow channeling in fracture networks: characterizing the effect of density on preferential flow path formation

JD Hyman - Water Resources Research, 2020 - Wiley Online Library
Flow channelization is a commonly observed phenomenon in fractured subsurface media
where the flow of fluids is restricted primarily to highly transmissive fracture networks …

Influence of aperture variability on dissolutional growth of fissures in karst formations

RB Hanna, H Rajaram - Water Resources Research, 1998 - Wiley Online Library
The influence of aperture variability on dissolutional growth of fissures is investigated on the
basis of two‐dimensional numerical simulations. The logarithm of the fissure aperture before …

Flow and transport in three-dimensional discrete fracture matrix models using mimetic finite difference on a conforming multi-dimensional mesh

JD Hyman, MR Sweeney, CW Gable, D Svyatsky… - Journal of …, 2022 - Elsevier
We present a comprehensive workflow to simulate single-phase flow and transport in
fractured porous media using the discrete fracture matrix approach. The workflow has three …

Transport upscaling under flow heterogeneity and matrix-diffusion in three-dimensional discrete fracture networks

JD Hyman, M Dentz - Advances in Water Resources, 2021 - Elsevier
We investigate the combined effects of network scale flow variability and retention due to
matrix-diffusion on the scaling behavior of transport through fractured media. Two of the …

The role of probabilistic approaches to transport theory in heterogeneous media

B Berkowitz, H Scher - Dispersion in heterogeneous geological formations, 2002 - Springer
A physical picture of contaminant transport in highly heterogeneous porous media is
presented. In any specific formation the associated governing transport equation is valid at …

Predictions of first passage times in sparse discrete fracture networks using graph-based reductions

JD Hyman, A Hagberg, G Srinivasan, J Mohd-Yusof… - Physical Review E, 2017 - APS
We present a graph-based methodology to reduce the computational cost of obtaining first
passage times through sparse fracture networks. We derive graph representations of …