The Impact of Numerical Precision on Optimal Groundwater Hydraulic Control

by David P. Ahlfeld, (A.M.ASCE),
R. Guy Riefler,



Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water

Abstract:

The numerical precision retained in the formulation of groundwater hydraulic control optimization problems can have significant impacts on the accuracy of the solution. Sources of imprecision include the use of finite differencing for calculation of the response matrix and the solution of the groundwater simulation model. These elements are discussed and an example of the impacts of imprecision on optimal solutions is presented. It is recommended that groundwater optimization codes be modified to improve precision and care be taken in specific application.

Subject Headings: Groundwater | Hydraulics | Simulation models | Numerical methods | Groundwater flow | Standards and codes | Matrix (mathematics)

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