Mechanism Analysis of the Influence of Structural Parameters on the Hydraulic Performance of the Novel Y-Shaped Emitter

As a key component of drip irrigation system, the performance emitters is determined by flow channel structures and parameters. In this paper, novel Y-shaped labyrinth-channel emitter was proposed, influence hydraulic researched under different waist-arc angles (α) ratios crown height to chord length (a:b). The characteristics energy dissipation mechanisms water in were analyzed using fluid dynamics software. analysis showed that, keeping ratio unchanged with an increase angle from 90° 180°, pressure-drop before after through vortex area increased, improved, specifically: design could be reduced 6.02–26.7%, slope curve 9.83–28.1%. smaller length, weaker on performance. Keeping unchanged, there decrease 6:30 1:30, strength inside improved: 7.56–23.5%, 5.43–20.5%. bigger angle, performance, even point having no effect. When close pressure-flow commonly-used triangular-channel emitter, two similar, former width 25%, as compared latter, or shorten 44.3%. results that had better triangular-flow-channel commonly used today. Therefore, has broad application prospects water-saving irrigation.