
TY  - JOUR
A1  - Watson, KK 
A1  - Jones, MJ 
T1  - Estimation of hydrodynamic dispersion in a fine sand using an approximate analytical solution
JF  - Soil Research
JO  - Soil Res.
Y1  - 1981
VL  - 19
IS  - 3
SP  - 265
EP  - 273
KW  - 
UR  - https://doi.org/10.1071/SR9810265 
N2  - The quasi-analytical approach to hydrodynamic dispersion during horizontal absorption under constant concentration conditions is discussed, and it is shown that the pore water velocity reaches a maximum at the ë value where g(ë) =0. The resulting small variations in pore water velocity that occur across the solute front and the relative constancy of water content in that region during absorption in a fine sand allow an approximate analytical solution for velocity-dependent hydrodynamic dispersion to be formulated. The equation is tested against computer-based numerical solutions for both horizontal absorption and vertical infiltration. The predictive quality of the approximate analytical solution is found to be very good for the systems examined. 
ER  -

