Geometry?Based Prediction of Solute Transport Process in Single 3D Rock Fractures Under Laminar Flow Regime

Subsurface substance migration in the fractured rock aquifer is mainly controlled by fractures, and prediction of solute transport fractures important to many geophysical processes engineering activities. This study explores possibility predicting process single from measurable physical properties. For this purpose, we conducted a large number pore-scale simulations 3D with different apertures various degrees roughness. The numerically-obtained breakthrough curves under laminar flow regime were reproduced high fidelity classic analytical solution within framework macroscopic advection-dispersion theory. fitted coefficients (hydrodynamic dispersion coefficient velocity) normalized parallel-plate model's values, further parameterized aperture b roughness parameter ?/b form ?eb/? + ?(m?/b ? 1)/bn 1 ?(?/b)/?b, respectively. By incorporating these modified cubic law into solution, proposed new predictive model. model was adaptively degenerated model, proved be capable only relying on arithmetic-mean mechanical its standard deviation, without solving velocity concentration fields. established quantitatively revealed impacts curve regime. puts step toward aquifers geometric