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Erschienen in:
2011 | OriginalPaper | Buchkapitel
The Influence of the Sectional form of Labyrinth Emitter on the Hydraulic Properties
verfasst von : Zhiqin Li, Lin Li
Erschienen in: Emerging Research in Artificial Intelligence and Computational Intelligence
Verlag: Springer Berlin Heidelberg
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This paper studied the influences of the sectional form of the labyrinth emitter used for single wing labyrinth drip irrigation hose on the hydraulic properties; analyzed theoretically the relationship between flow index of the emitter and flow pattern and the influences of the sectional form of the emitter on the flow index; simulated the flow field of the emitters with 5 different sectional forms under the conditions of 14 different discharges. The following conclusions are obtained: 1) To the non-compensatory drip emitter, the minimum flow index is 0.5 for completely turbulent flow; 2) Both discharge coefficient and flow index of the labyrinth emitter are positively correlation with the wetted perimeter. The bigger the wetted perimeter is, the higher the sensitivity of the emitter discharge to the pressure is. 3) With equivalent labyrinth path cross section area an emitter with a square shaped cross section performs better than one with a rectangle section.