PATRAC: development and application of a groundwater-quality model for variable density flow
Besselink, L.A.M. (1989). PATRAC: development and application of a groundwater-quality model for variable density flow. Natuurwet. Tijdschr. 70(1-4): 109-116
In: Natuurwetenschappelijk Tijdschrift. L. Walschot/Natuur- en Geneeskundige Vennootschap: Gent. ISSN 0770-1748, more
Also appears in:De Breuck, W.; Walschot, L. (Ed.) (1989). Proceedings of the 10th Salt-Water Intrusion Meeting Ghent (Belgium), 16-20 May 1988. Natuurwetenschappelijk Tijdschrift, 70(1-4). Natuurwetenschappelijk Tijdschrift: Gent. 408 pp., more
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| Keywords |
Models > Mathematical models
Motion > Fluid motion > Fluid flow > Density flow
Water > Ground water
Water quality
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| Abstract |
The aim of the study was the development of a groundwater-flow model for both fresh-/saline- and polluted-groundwater problems in a vertical profile. The model is a tool for the explanation and forecasting of transport phenomena in porous media. The characteristics of the model PARTRAC are : -the pressure field is calculated with the finite element metbod;-quasi-steady; -solute transport simulated by particle tracking; -concentrations defined per element; -molecular diffusion and hydrodynamic dispersion simulated with the random walk metbod; -first-order decay; -linear adsorption ; -density-dependent flow; -non-numerical dispersion; -interactive procedure for generation of an input-file witb a mesh generator. In this model the velocity field, which is of great importance for transport phenomena through porous media, is defined in a new manner. The model was calibrated with various theoretical test-cases, like:-intrusion of salt sea-water under a dike with a sheet pile;-upconing below a well pumping above an interface between fresh and salt groundwater;-the problem of initial interface between fresh and salt groundwater. Furthermore the model has been applied in a practical case. The possibilities of the PARTRAC-program will be discussed in this paper. |
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