Numerical Analysis To Solve The Hydraulics Of Trickle Irrigation Units

Mizyed's picture
Journal Title, Volume, Page: 
Irrigation and Drainage Systems 16: 53–68, 2002
Year of Publication: 
2002
Authors: 
Numan Mizyed
Faculty of Agriculture, An-Najah National University, P.O. Box 7, Nablus, Palestine Authority
Current Affiliation: 
Civil Engineering Department, Faculty Of Engineering, An-Najah National University, Nablus, Palestine
Preferred Abstract (Original): 
A model to solve the hydraulics of trickle irrigation units is developed in this study. This model is based on utilizing Newton Raphson technique. The model converts laterals into equivalent outlets through utilizing a simple power relation between inlet lateral discharge and hydraulic head. This relation is obtained through least squares analysis between inlet lateral discharge and hydraulic head. This study showed that this relation with only two coefficients is sufficient to describe the relation between inlet lateral discharge and hydraulic head. Based on this relation, the model converts manifold lines into equivalent laterals and solves their hydraulics by Newton Raphson technique. After that solution, the model evaluates trickle ir- rigation units by estimating statistical uniformity and Christiansen uniformity coefficients and checks the solution obtained through forward step method for each lateral. Several numerical examples for utilizing the model are presented in this paper.
AttachmentSize
Numerical Analysis To Solve The Hydraulics Of Trickle Irrigation Units93.73 KB