Abstract
Laboratory experiments and numerical simulations investigate conservative contaminant transport in a heterogeneous porous medium. The laboratory experiments were performed in cylindrical columns 1 m long and 3.5 cm inside diameter filled with spherical glass beads. Concentration breakthrough curves are measured at a scale much finer than the size of the heterogeneity. Numerical simulations are based on a random walk in a known constant velocity field. The heterogeneity is a distinct, discontinuous change in the local permeability field. Fluid flow is miscible, flowing in a saturated porous medium. Previous work has shown this to be a very poorly understood phenomenon. The measurements reported here help to better understand how dispersion evolves through and past a heterogeneity.
Original language | English (US) |
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Pages (from-to) | 107-124 |
Number of pages | 18 |
Journal | Transport in Porous Media |
Volume | 54 |
Issue number | 1 |
DOIs | |
State | Published - Jan 1 2004 |
Keywords
- Experimental measurement
- Miscible flow
- Monte Carlo
- Non-Fickian
- Numerical simulation
- Saturated flow
- Scale effect