Research Article
Sep 1964
Nonuniformity and Sprinkler Application Efficiency
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VIEW THE REPLYPublication: Journal of the Irrigation and Drainage Division
Volume 90, Issue 3
Abstract
The effects on nonuniformity of application on the application efficiency of sprinkler irrigation are investigated, first by considering three special cases, and then by deriving a general expression. This expression is then used in conjunction with some hypothetical nonuniform distribution patterns and one real pattern to give a graphical indication of the form of relationships between three quantities: The Christiansen uniformity coefficient; and what have been termed the mean application ratio and the application efficiency factor due to nonuniformity. The effects of skewness of the distribution of precipitation are shown to be significant. The analysis is based on the assumption that the depth of soil wetted at any point is proportional to the precipitation that has fallen at that point.
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Published In
Journal of the Irrigation and Drainage Division
Volume 90 • Issue 3 • September 1964
Pages: 41 - 53
Copyright
© 1964 American Society of Civil Engineers.
History
Published in print: Sep 1964
Published online: Feb 11, 2021
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Authors
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David T. Howell, M.ASCE
Lecturer in Civ. Engrg., Water Research Lab., The Univ. of New South Wales, Manly Vale, N. S. W., Australia
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Terms of Use: ASCE Library Cards are for individual, personal use only. Reselling, republishing, or forwarding the materials to libraries or reading rooms is prohibited.
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