THE MIGRATION OF LIGHT ORGANIC LIGUIDS IN AN UNSATURATED-SATURATED ZONE OF THE SOIL
| Autor: | Rafa H. Al-Suhaili, Ayad A. Faisal |
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| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: | |
| Zdroj: | Journal of Engineering, Vol 12, Iss 03 (2006) |
| Druh dokumentu: | article |
| ISSN: | 1726-4073 2520-3339 |
| DOI: | 10.31026/j.eng.2006.03.05 |
| Popis: | A one-dimensional finite difference model for the simultaneous movement of light nonaqueous 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. |
| Databáze: | Directory of Open Access Journals |
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