Numerical Simulation of Vibration Pressure on the Hydraulic Performance of Round-Flow Emitter

Abstract

Conventional drip irrigation systems are working under constant working pressure, but the core component emitter is prone to clogging. Round-flow emitter is selected as the research object. Computational fluid dynamics software FLUENT 6.3 is applied to simulate the hydraulic performance of the round-flow emitter under the condition of vibration pressure. Vibration modes are selected as the sine waveform, triangular waveform and rectangle waveform. Three vibration parameters such as basic pressure, vibration period and vibration amplitude are taken as the factors to design the orthogonal experiment. Simulation results show that, water fluctuation and energy dissipation of round-flow emitter in vibration mode are better than that of constant pressure. The combination of basic hydraulic pressure 8m, vibration period 72s, vibration amplitude 6m is the optimal vibration parameters. The research of this paper provides a certain reference for selecting the vibration parameters of the vibration mode.