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Analytical Equation for Variation of Discharge in Drip Irrigation Laterals |
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| Authors: | V. Ravikumar C. R. Ranganathan S. Santhana Bosu |
| Affiliation: | 1Assistant Professor, Agricultural Engineering College & Research Institute, Kumulur, Lalgudi (Tk), Trichy (Dist.), India?621?712. 2Professor, College of Agricultural Engineering, TNAU, Coimbatore, India?641?003. 3Professor, Agricultural Engineering College & Research Institute, Kumulur, Lalgudi (Tk), Trichy (Dist.), India?621?712. |
| Abstract: | Statistical uniformity of discharge variation is an important parameter in designing drip irrigation laterals. A simple analytical equation is derived to determine the coefficient of variation of discharge. This equation is used to determine the coefficient of variation of discharge for a numerical problem. The result is compared with the energy gradient line approach. Both the methods give the same result. For any required coefficient of variation of discharge, the diameter of a lateral can be designed directly for a known lateral length, slope, emitter discharge exponent, pressure head at the start of the lateral, and discharge rate through the lateral, by writing the analytical equation in quadratic form. |
| Keywords: | Trickle irrigation Uniformity Laterals Water discharge |