Bioresource and Agricultural Engineering Commons^™

Local Head Loss Of Non-Coaxial Emitters Inserted In Polyethylene Pipe, Osvaldo Rettore Neto, Jarbas Honorio De Miranda, José Antonio Frizzone, Stephen R. Workman

Biosystems and Agricultural Engineering Faculty Publications

The design of a lateral line for drip irrigation requires accurate evaluation of head losses in not only the pipe but in the emitters as well. A procedure was developed to determine localized head losses within the emitters by the formulation of a mathematical model that accounts for the obstruction caused by the insertion point. These localized losses can be significant when compared with the total head losses within the system due to the large number of emitters typically installed along the lateral line. An experiment was carried out by altering flow characteristics to create Reynolds numbers (R) from 7,480 …