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Application of unsteady flow analysis in designing a multiple outlets sprinkler irrigation system

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Abstract

A simplified method has been developed for designing and calculating sprinkling systems by cutting lines across laterals at points next to the first sprinkler with a view to divide the system into two separate parts; field and basic. Equations of lateral pressure heads were used to express the relationship between inlet pressure head and velocity of the flow pumped to laterals on the field part. The above equations were then used to set up calculating conditions for the Basic part by unsteady flow method in order to define head and discharge at downstream end of the pipe in the Basic part. The forward step method was used for determining distributions of the pressure head and the emitter discharge along each lateral. A calculating schema on computer has been carried out in order to apply the method to any sprinkling system. The procedure of analysis and calculation showed that this method is generally accurate, simple and rapid.

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Authors and Affiliations

  1. Graduate School of Agricultural Sciences, Tottori University, 4-101 Koyama, Minami, Tottori, 680-8553, Japan

    Man Chi Trung

  2. Faculty of Agriculture, Yamaguchi University, 1677-1 Yoshida, Yamaguchi, 753-0815, Japan

    Soichi Nishiyama

  3. Arid Land Research Center, Tottori University, 1390 Hamasaka, Tottori, 680-0001, Japan

    Hisao Anyoji

Authors
  1. Man Chi Trung
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  2. Soichi Nishiyama
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  3. Hisao Anyoji
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Correspondence to Soichi Nishiyama.

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Trung, M.C., Nishiyama, S. & Anyoji, H. Application of unsteady flow analysis in designing a multiple outlets sprinkler irrigation system. Paddy Water Environ 5, 181–187 (2007). https://doi.org/10.1007/s10333-007-0071-0

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  • DOI: https://doi.org/10.1007/s10333-007-0071-0

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