Chemigation pipeline transport model for nonsoluble pesticide. II. Numerical and field validation

P. M. Waller, D. J. Hills, D. K. Giles

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


A computer model describing the injection and transport of a nonsoluble pesticide in a linear move irrigation lateral is developed and validated. Inputs to the model are both intensive and extensive properties of irrigation water and pesticide, and the model outputs chemical concentration in water for each sprinkler along the linear move irrigation lateral. Numerical studies are performed that compare Eulerian and Lagrangian methods and provide the transition between the two methods. The transport model and a model for evaluating drop diameter are used to calculate sprinkler discharge concentration as a function of distance along the pipeline, and the model is compared with field data for a single port injector. The model is also evaluated for multiorifice and multiport injection systems. A technique for optimizing placement of injectors for the multiport system is described and evaluated.

Original languageEnglish (US)
Pages (from-to)1711-1718
Number of pages8
JournalTransactions of the American Society of Agricultural Engineers
Issue number6
StatePublished - Nov 1995

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)


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