Parameter Identification in Water System Models

by Wen-sen Chu, Univ of Washington, Dep of Civil, Engineering, Seattle, WA, USA,
Eric W. Strecker, Univ of Washington, Dep of Civil, Engineering, Seattle, WA, USA,



Document Type: Proceeding Paper

Part of: Computer Applications in Water Resources

Abstract:

Parameter identification (PI) is an automatic model calibration technique with which the unknown physical parameters in a mathematical model are determined from a constrained optimization formulation. A number of PI techniques have been proposed in modeling both surface and subsurface water systems to date. In this paper, the application of generalized PI algorithm is presented. The PI algorithm was applied a two-dimensional estuarine hydrodynamics model and a two-dimensional groundwater contaminant transport model. Both applications deal with realistic problems where only limited data are available. The implementation procedures of the algorithm and computational experience are presented.

Subject Headings: Mathematical models | Computer models | Parameters (statistics) | Two-dimensional models | Optimization models | Hydrologic models | Contaminant transport

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