A quasi-steady state integral model for closed-end border irrigation
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A quasi-steady state integral (QSSI) model was developed for irrigation on closed-end (CE) borders. A semi-analytical method was used for solving the governing equations. The model results compared favorably with experimental data from 18 experimental CE borders. The absolute average percent deviation (APD) between calculated and observed advance times varied between 5.3 and 28.5. The APD for recession times varied between 1.0 and 37.3. The calculated advance times were found to be consistently smaller than observed values for these borders. For constant infiltration parameters, the border bed roughness was found to be the single most important parameter affecting model results. 1986.