ABSTRACT:

This resource contains supplementary data for the publication in Water Resources Research 2019: Partitioning dynamics of gravity-driven unsaturated flow through simple T-shaped fracture intersections

ABSTRACT:

For detailed description, see file "supporting information r2-xs-ZY.doc".

ABSTRACT:

This resource contains the simulation parameters and data for 2D, 2D axisymmetric and 3D numerical models of colloid deposition. Please find the Excel files for the data.

ABSTRACT:

We present an experimental and theoretical study of unsaturated flow in discrete fracture networks. The focus is on the breakthrough time of infiltrating liquid through the fracture networks as well as the spatial distribution of local flow status under a wide range of flow rates. Through visualized experiments, the fluid motion in the fracture network is recorded and analyzed, and gravity-driven preferential pathways are observed. The location of the breakthrough path is found to be insensitive to the flow rate under the single-inlet flow condition. Based on analogy with slug migration in a single fracture and considering liquid accumulation due to the capillary barrier effect at the fracture intersections, we propose a theoretical model of liquid breakthrough time through an initially dry fracture network. The theoretical predictions are found to be in excellent agreement with the experiment results. Using the model, we analyze the relative contribution of times needed for liquid migration and for local liquid accumulation to the breakthrough time. We also find that the spatial distribution of local flow status at the steady-state varies significantly with the flow rate. The improved understanding and the proposed model are of significance for predicting the time required for a fluid/contaminant to reach a certain depth in unsaturated fractured media, and may provide new physical insights on the complex unsaturated flow dynamics.

ABSTRACT:

This resource includes experimental data for particle clogging in fractures, including images, videos, and other data. The movie file shows emergence of all the patterns of the clogging experiments in a vertical rough fracture. The patterns include : I, non-clogging (NC); II, stripe-like accumulation (SA); III, complete blockage (CB); IV, entrance sealing (ES). The fracture aperture field is measured by using the light transmission method and provided in the spreadsheet file format. The fracture is made of transparent replicas of granite rock fracture surfaces. The procedure for fabricating a transparent fracture cell is as follows. Step 1: split a rock block to obtain a rough rock fracture with the Brazilian test method. Step 2: produce two silicone rubber molds of the two rough surfaces. Step 3: cast two resin replicas of rough surface respectively from the two silicone rubber molds. Step 4: match and glue the two fracture replicas, and then add an inlet manifold. The last two spreadsheet files include the data for normalized clogging volume Vc and mean aperture of clogged fracture areas, as a function of secondary liquid content ω and flow rate Q (represented by the Stokes number St) at the end of the experiments.

ABSTRACT:

This resource includes Matlab scripts for simulating unsaturated flow in a fracture network. An idealized two-dimensional honeycomb-like fracture network composed of a series of Y-shaped and inverted Y-shaped intersections is considered.

ABSTRACT:

This resources contains data for the paper on colloid aggregation and dynamics of fluid structures during two-phase flow in porous media. The files are in Excel format and include data for colloid cluster size distribution, volume of wetting fluid clusters, and relative permeabilities.

ABSTRACT:

This resource contains the experimental data for the paper "Displacement patterns of a Newtonian fluid by a shear-thinning fluid in a rough fracture". The files include a MATLAB data file for the aperture field and three Excel files for the data of front tip location and velocities at different times.

ABSTRACT:

This resource contains the data for the paper entitled "Influence of liquid splitting behavior at intersections on infiltration dynamics in an unsaturated fracture network." The parameters and the scripts for reproducing the figures are included.