Analysis of basin irrigation performance with variable inflow rate |
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| Authors: | JMohan Reddy Wayne Clyma |
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| Institution: | Department of Agricultural and Chemical Engineering, Colorado State University, Fort Collins, CO 80523 U.S.A. |
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| Abstract: | Basin irrigation systems were designed for a constant flow rate. The operation of the designed system was simulated using the zero-inertia model of surface irrigation. The performance of the system was obtained for modified design flow rates. Three patterns of flow variation — sinusoidal, initially low then high, and initially high then low — were studied. The average of a variable flow rate in a given simulation equalled, was less than and greater than the design flow rates. The flow rate variations did not lower the performance of the system when the average flow rate during irrigation was greater than or equal to the design flow rate. Significant reductions in system performance occurred when the average flow rate was equal to 50% of the design. Basin irrigation systems should be designed for the average of the variable flow rate available at the field outlet. |
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