Effects of the injection radius and varying velocity on solute transport in a finite porous medium with radial geometry

被引：0
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作者：
Achille Stéphane Ngomyap Nganso
Fulbert Kamga Togue
César Biouele Mbane
机构：
[1] University of Yaoundé 1,Laboratory of Earth Environmental Physics
[2] Cameroon,Institute of Fisheries and Aquatic Sciences, Yabassi
[3] University of Douala,undefined
来源：
Sādhanā | / 49卷
关键词：
Advection dispersion; cylindrical coordinates; vary velocity; injection radius; porous medium;
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摘要：
This study presents the effect of the flow velocity, which varies exponentially with time, on solute transport in a finite porous medium with radial geometry. The two-dimensional advection-dispersion equation in the cylindrical coordinate system is solved by using finite difference method. The concentration profiles are established for a duration of four hours of infiltration. It appears that the concentrations are lower in the case of the decreasing exponential velocity. The analysis of the effect of the injection radius showed that the retention of pollutants decreases when the injection radius increases. These findings can be used to design the size of a filter system for drinking water provision, and the environment protection.
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