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Inspectional Analysis of Convective-Dispersion Equation and Application on Measured Breakthrough Curves

^a School of Natural Resources, The Ohio State Univ., 422A Kottman Hall, 2021 Coffey Road, Columbus, OH 43210
^b Dep. of Hydraulics, Univ. of Agricultural Sciences, 18-Muthgasse 1190, Vienna, Austria
^c Dep. of Land, Air and Water Resources, Univ. of California, 1004 Pine Ln., Davis, CA 95616-1728

View larger version (21K): [in a new window]   Fig. 1. Observed and fitted Cl breakthrough curves using the equilibrium convective-dispersion equation for a slow, medium, and fast pore-water velocity through a 10-cm loam soil column.

View larger version (29K): [in a new window]   Fig. 2. Observed and fitted Cl breakthrough curves using the equilibrium convective-dispersion equation (a) for a slow, medium, and fast pore-water velocity in 10-cm loam soil columns, and (b) from 10-, 20-, and 30-cm loam soil columns for a pore-water velocity of 0.3 cm h-1.

View larger version (28K): [in a new window]   Fig. 3. Observed and fitted Cl breakthrough curves using the equilibrium convective dispersion equation (a) for a slow, medium, and fast pore-water velocity in 20-cm loam soil columns, and (b) from 10-, 20-, and 30-cm sandy loam soil columns for a pore-water velocity of 0.3 cm h-1.

View larger version (18K): [in a new window]   Fig. 4. The relationship between DD-10 and Peclet Number.

View larger version (32K): [in a new window]   Fig. 5. Measured Cl breakthrough curves in 10-cm loam soil columns for step Cl application (a) theoretical and (b) scaled.

View larger version (30K): [in a new window]   Fig. 6. Measured Cl breakthrough curves in 10-cm loam soil columns for pulse Cl application (a) theoretical and (b) scaled.

View larger version (33K): [in a new window]   Fig. 7. Measured Cl breakthrough curves in 20-cm loam soil columns for pulse Cl application (a) theoretical and (b) scaled.

View larger version (33K): [in a new window]   Fig. 8. Measured Cl breakthrough curves in 30-cm loam soil columns for pulse Cl application (a) theoretical and (b) scaled.

View larger version (27K): [in a new window]   Fig. 9. Measured Cl breakthrough curves in 10-cm sandy loam soil columns for pulse Cl application (a) theoretical and (b) scaled.

View larger version (31K): [in a new window]   Fig. 10. Measured Cl breakthrough curves in 20-cm sandy loam soil columns for pulse Cl application (a) theoretical and (b) scaled.

View larger version (32K): [in a new window]   Fig. 11. Measured Cl breakthrough curves in 30-cm sandy loam soil columns for pulse Cl application (a) theoretical and (b) scaled.