Rapid Prediction of Hydraulic Performance for Emitters with Labyrinth Channels
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Volume 139, Issue 5
Abstract
Hydraulic performance of emitters with labyrinth channels is a primary factor that designers need to consider, and rapid prediction of hydraulic performance is very helpful for an emitter’s structural design. In this study, a new variable named pressure loss coefficient (PLC) was proposed as the evaluation index of an emitter’s hydraulic performance. By using the dimensionless analysis and orthogonal design method, the PLCs of emitters with the same shape but different geometries were calculated. The results obtained from analysis of range and variance show that the influence sequence on PLC ranks as follows: . A mathematical model was therefore developed between PLCs and the key parameters according to the multivariable regression method, which can be used to rapidly predict the hydraulic performance for emitters with different geometries.
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Acknowledgments
This work was partially supported by the Fundamental Research Funds for the Central Universities, China Postdoctoral Science Foundation, and the Program for Changjiang Scholars and Innovative Research Team in University (No. IRT0646).
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Published In
Journal of Irrigation and Drainage Engineering
Volume 139 • Issue 5 • May 2013
Pages: 414 - 418
Copyright
© 2013 American Society of Civil Engineers.
History
Received: Sep 24, 2011
Accepted: Nov 12, 2012
Published online: Nov 13, 2012
Published in print: May 1, 2013
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