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Optimal design with the use of pumping flow simulation in the area of Agia in the district of Chania

Arampatzi Panagiota

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Summary

The present study aims to find the optimal pumping rates of the Agia area wells, in the district of Chania. The study is based on a simulation model, which is designed via the PTC software. Ten observation wells and three additional pumping wells were considered to the above-mentioned model. The optimal pumping rates which cover the region's needs were examined according to three scenarios of different minimum hydraulic heads of the aquifer, one of which is similar to the existing situation. The optimization is accomplished by using the Simplex method, as the results of the simulation model for the hydraulic heads at the observation wells decrease non-linearly in relation to the flow rate. Due to this decrease of groundwater level, the consecutive application of Simplex method is required, so that the gradual linearization can be achieved. An algorithm is created and, by its convergence, the optimal solution for each scenario separately is developed. Finally, the results of the three scenarios are compared to the data of Agia’s present aquifer state. Also, the possibility of increasing the total pumping rate without the decline of the aquifer level being greater than the level determined in each scenario, is examined.

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