reduced permeability

# permeability reduction Matlab scripts to simulate the reduced permeability of porous granular media due to ice or hydrate. The functions are organized in two classes, including: - `soil.m`. Calculate the soil freezing curves using a Monte Carlo method on synthetic soil models. - `frw.m`. Calculate the permeabilities of the synthetic soil models, ice-free or ice-bearing, and compare the results against published models and measurements. - `duct.m`. Examples showing the calculations in straight ducts of simple cross-sections. Parameters and data for calculations are in: - `param.json`. All relevant parameters. - `data/conductivity.xlsx`. Digitized measurements used for validation. - `data/kr_finney.mat`. Simulated permeability reduction of Finney pack. - `data/mc`. Simulated Monte Carlo results to calculate the soil freezing curves. - `data/deposit`. Synthetic soil models, including the mono-dispersed Finney pack, and poly-dispersed synthetic soil. For details of the code, refer to the paper *Estimating permeability of partially frozen soil using floating random walks* published in Water Resources Research. This repository can also be found on GitLab.