Greener Journal of Science, Engineering and Technological Research Vol. 8 (1), pp. 001-013, May 2018.
ISSN: 2276-7835
Research Paper
Manuscript Number: 040618056
(DOI: http://doi.org/10.15580/GJSETR.2018.1.040618056)
Investigation of Water Distribution Characteristics for Large Cannon Irrigation Sprinkler under different Spacing and Layouts
ISSAKA Zakaria1, ISSAH Mohammed Hardi1,
YAMBA Phillip2
1Department of Agricultural Engineering, Tamale Technical University, Tamale, Northern Region, Ghana.
2Department of Mechanical Engineering, Tamale Technical University, Tamale, Northern Region, Ghana.
Abstract
Relevant factors affecting the irrigation performance of large cannon sprinkler include the nozzle diameter, operating pressure, layout form, and overlapping distance, which were studied under no wind conditions. The discharge coefficient ranged from 0.96 to 0.99. A mathematical model of radius of throw was regressed and the coefficient of determination was 0.9765. The application rate was lower near the sprinkler, and the highest value occurred under the radius of throw from 4 to 6 m for each water distribution pattern. The average application rate decreased with increase in operating pressure. The average application rate increased with the increase in nozzle diameter. The increased or decreased in magnitude of average application rate under small nozzle diameter was larger than the large nozzle diameter for the same range pressure variations. The maximum CU values increased with increase in pressure under different nozzle diameter or different layouts. Triangular layout gave higher uniformities compared with square layout. The optimal CU values and spacing coefficients of large cannon sprinkler with different layouts, pressure and nozzle diameter were proposed.
Keywords: large cannon sprinkler; water distribution; uniformity; spacing & layouts
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Journal Name : citation_journal : Greener Journal of Science, Engineering and Technological Research
Publication Status/Date : usp_status_date : May 2018
