Extended forward step method for hydraulic analysis of pipeline sprinkler irrigation system

This paper analyzes the characteristics of graphical solution method, analytical equation method and numerical method, then discusses finite element method and forward step method of the numerical method. A new numerical method, namely extended forward step method, was presented for the hydraulic analysis of the pipeline sprinkler irrigation system. Using the Bernoulli Energy Equation and Darcy-Weisbach Equaion, the equations for laterals and submains were established respectively. By successive linear approximation, the hydraulic analysis of sprinkle irrigation system with single laterals was put forward.