Field-scale sprinkler irrigation system hydraulic model. II: Hydraulic simulation

D. Zerihun, C. A. Sanchez

Research output: Contribution to journalArticle

3 Scopus citations

Abstract

This paper describes a mathematical model for the hydraulic characterization of a field-scale solid set sprinkler irrigation system with a double-line lateral layout configuration. Formulation of the basic hydraulic equations along the mainline and laterals is based on manifold hydraulics. Lateral hydraulics remains the same as that described in a previously published paper, for systems with single-line laterals. A description of the mainline hydraulics of systems with a double-line lateral layout configuration, which requires the formulation and iterative solution of a system of nonlinear equations, is presented here. The hydraulic characterization functionality of the model, described in a previously published paper, serves as an interface for coupling the numerical solutions of the lateral and mainline hydraulic equations. In addition, this paper presents a description of the simulation functionality of the sprinkler hydraulic model and a related numerical algorithm, which is based on one-dimensional optimization. A comparison of model output with field data suggests that model performance is satisfactory. Example problems, consisting of field-scale solid set sprinkler systems with single-line and double-line laterals, are used to highlight the practical application of the hydraulic model.

Original languageEnglish (US)
Article number04014020
JournalJournal of Irrigation and Drainage Engineering
Volume140
Issue number7
DOIs
StatePublished - Jul 1 2014

Keywords

  • Hydraulic model
  • Sprinkler irrigation

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Water Science and Technology
  • Agricultural and Biological Sciences (miscellaneous)

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