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Μοντελοποίηση της ροής υπόγειων υδάτων του υδροφορέα περιοχής Μοιρών Ηρακλείου, Κρήτης

Thomadakis Nikolaos

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Summary

This paper examines the methods used in various models in order to simulate the movement of the underground aquifer and the transfer of pollutants within it. The theoretical part of the paper describes the equations and boundary conditions governing such a system of underground flow and analyzes the two most prevalent methods, that of finite elements and that of finite differences. Then the model used in the present study, the PTC (Princeton Transport Code), is mentioned, and the equations and boundary conditions governing it are described in detail.In the second part of this paper, a brief description of the study area (Mires, Heraklion, Crete) is presented with meteorological and climatic data (rain, wind data), as well as data on geology and the natural environment of the area. The calibration of the model follows, based on the data available for the region. The process is described in steps. Then reference is made to the results of the model and to the verification of whether the model satisfactorily represents the actual condition of the groundwater flow of the Mires aquifer. Finally, two scenarios are examined, the first proposes increase in quantity of the extracted water from the pumping wells by 10% and the reduction of rainfall by 10%, while the second proposes increase in quantity of the extracted water from the pumping wells by 20% and the reduction of rainfall by 20%.

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