Informed Use and Potential Pitfalls of Canal Models

by Dinshaw N. Contractor, Univ of Arizona, Tucson, United States,
Wytze Schuurmans, Univ of Arizona, Tucson, United States,

Document Type: Proceeding Paper

Part of: Irrigation and Drainage

Abstract: Numerical models of unsteady flow in canals are used in the design, analysis and operation of irrigation canal systems. Their informed use requires knowledge of the potential pitfalls, sources of error, calibration of parameters and verification of the model. Two tests are presented that can be used to check the accuracy and stability of the programs. The first is a mass conservation test and the second is a ramp discharge test. The results of these tests on several available programs are presented. Model calibration and model interpretation are also discussed.

Subject Headings: Computer models | Mathematical models | Hydraulic models | Canals | Irrigation systems | Unsteady flow | Flow simulation | Simulation models

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