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The Migration of Light Organic Liquids in An Unsaturated-Saturated Zone Of The Soil | ||
| Journal of Engineering | ||
| Article 1, Volume 13, Issue 3, 2007, Pages 1649-1664 | ||
| Authors | ||
| Ayad A. Faisal; Rafa H. Al-Suhaili | ||
| Abstract | ||
| A one-dimensional finite difference model for the simultaneous movement of light non-aqueous phase liquid (LNAPL) and water through unsaturated-saturated zone of the soil in a three fluid phase system with air assumed constant at atmospheric pressure is developed. The flow equations described the motion of light non-aqueous phase liquid and water are cast in terms of the wetting and non-wetting fluid pressure heads respectively. The finite difference equations are solved fully implicitly using Newton-Raphson iteration scheme. The present numerical results are compared with results of Kaluarachchi and Parker (1989) and there is a good agreement between them. The present model can be used to simulate various transport problems in a good manner. Results proved that the maximum LNAPL saturation occurred below the source of the contaminant during LNAPL infiltration. During redistribution, the LNAPL saturation had a maximum value at the advancing of the LNAPL infiltration front. | ||
| Keywords | ||
| Multiphase; unsaturated; saturated; Modeling And Contaminant | ||
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