Simple Method for the Design of Microirrigation Paired Laterals on Sloped Fields
Publication: Journal of Irrigation and Drainage Engineering
Volume 136, Issue 4
Abstract
In this study, a method for designing paired laterals that meet with required water application uniformity on sloped fields was developed using the energy gradient line approach based on the definition of the best submain position locations in which the same minimum pressure exists in uphill and downhill laterals. The best equation form of best submain position was determined. Also, the solution procedure was introduced to get the final solution to avoid the phenomena of no convergence or slow convergence. In this method, the required water application uniformity was used directly as a computational parameter in designing. When the designed emitter discharge, required water application uniformity and one parameter (either length or diameter) of a paired lateral are provided; the system developed here enables another parameter and the best submain position to be determined for any field slope conditions. Taken together, the results of this study show that final solutions can be obtained quickly and reasonably.
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Acknowledgments
This study is part of Project No. UNSPECIFIEDD0706007040191-06, which was supported by the Beijing Municipal Science and Technology Plan, the Knowledge Innovation Project KSCX2-YW-N-003 of the Chinese Academy of Sciences, National Key Technology R&D Program (Grant No. UNSPECIFIED2006BAD11B02-03), and the Project for 100 Outstanding Young Scientists (Yaohu Kang) supported by the Chinese Academy of Sciences.UNSPECIFIED
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Information & Authors
Information
Published In
Journal of Irrigation and Drainage Engineering
Volume 136 • Issue 4 • April 2010
Pages: 271 - 275
Copyright
© 2010 ASCE.
History
Received: Jan 31, 2009
Accepted: Sep 14, 2009
Published online: Sep 16, 2009
Published in print: Apr 2010
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