Determining Optimal Parameter Dimensions for Water Distribution Network Models

by Keshaw N. Mallick, Univ of Arizona, Tucson, United States,
Kevin E. Lansey, Univ of Arizona, Tucson, United States,
Kevin S. Tickle, Univ of Arizona, Tucson, United States,



Document Type: Proceeding Paper

Part of: Water Policy and Management: Solving the Problems

Abstract:

Water distribution systems contain a large number of pipes whose roughness factors are unknown prior to model calibration. During the calibration process, pipe roughnesses for each link cannot be determined without a tremendous cost. Therefore, the system is simplified by assuming sets of pipes have the same roughness coefficient (parameterization), by modeling a skeletal system after many pipes are dropped from the model (skeletonization) or a combination of these two alternatives. This paper presents an approach for examining the impact of model parameterization.

Subject Headings: Water supply systems | Pipes | Parameters (statistics) | Hydraulic roughness | Water pipelines | Calibration | Optimization models

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