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Paper Information

Journal:   INTERNATIONAL JOURNAL OF INDUSTRIAL ENGINEERING AND PRODUCTION MANAGEMENT (IJIE) (INTERNATIONAL JOURNAL OF ENGINEERING SCIENCE) (PERSIAN)   SUMMER 2007 , Volume 18 , Number 2; Page(s) 65 To 75.
 
Paper: 

GENERATION OF AQUIFER UNIT RESPONSE MATRIX COEFFICIENTS USING ANNS

 
 
Author(s):  AFSHAR A., ALI MOHAMMADI S.
 
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Abstract: 

The ANN methodology, inspired by neurobiology theories of massive interconnection and parallelism has been successfully employed in variety of optimization problems. In ground water management models, either governing equations are embedded into the management model or unit response matrixes are employed. Unit response matrixes development requires huge amount of data and/or simulation runs. In this paper, ANN is employed to develop unit response matrix coefficients to be later used in the management model.
To do it, a ANN model has been trained to predict the outcome of the flow code, which results in unit response matrix coefficients for the aquifer under consideration. To train the ANN model different realizations from pumping well co-ordinates, distance between pumping and observation wells, and hydraulic conductivities of pumping wells were used, it was concluded that pumping well co-ordinates may be successfully employed for developing unit response matrix coefficients to be later used in management models.
To test the performance of the proposed approach, the hypothetical aquifer was assumed. The aquifer response to different pumping stresses were compared using a well-defined simulation model and those resulted from unit response matrixes developed by (1) ANN approach and (2) direct data from groundwater simulation runs. It was concluded that ANN may be successfully employed for development of unit response matrix with limited data from field study or ground water simulation runs.

 
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