MAXIMIZING OF DISTRIBUTION UNIFORMITY FOR DRIP IRRIGATION SYSTEM USING CLOSED-CIRCUITS

Abstract

Distribution uniformity is considered one of more effective element that determine the success of designs, it is also an important factor that used to predict maximum length of lateral and optimum operating pressures, there were some problems and constraints that leads to a decrease in uniformity as a problem of water pressure reduction of the sub-lines ends and then started the trend to add modifications attempt to develop the traditional irrigation system. Using the closed circuits of irrigation systems is one way of these amendments to obtain a better water distribution to drip irrigation network. The experiments of this study were designed to achieve the following objectives: - 1) Enhancing the drip irrigation distribution uniformity by solving the problem of pressure reduction at the lateral line ends. 2) Recommend the better types of dripper to be applied in the laboratory experiment. 3) Studying some hydraulic parameters like pressure head, friction head losses on system performance. 4) Studying the effect of different drip irrigation designs and lateral line lengths on both laterals dripper flow rate, uniformity coefficient, and coefficient of variation. 5) Monitoring the pressure performance along the drip irrigation network