A Numerical Simulation Of Drainage In Unsaturated Sandy Soil Samples
Price
Free (open access)
Transaction
Volume
7
Pages
8
Published
1994
Size
518 kb
Paper DOI
10.2495/HY940381
Copyright
WIT Press
Author(s)
M. Sakellariou-Makrantonaki
Abstract
The aim of the present paper is the simulation of water movement during vertical one dimensional drainage, in samples of uniform sandy soil, laid on a porous capse of a very small saturation hydraulic conductivity. The Richards' equation was solved using finite differences with upper and lower boundary conditions zero flux and a condition type III (Fourier) respectively, taking into account the impedance of the porous capse. The results were obtained for a coarse, a medium and a fine sandy soil, Comparison between experimental measurements and computed results was made. 1 introduction The movement of water through unsaturated porous media is described by Richards' partial differential equation subjected to appropriate boundary and initial conditions. The equations has many applica
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