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- W2030213360 abstract "Abstract The hydraulic property of drip emitters is primarily reflected in steady dissipation of pressure energy by flow resistance. The dentate path helps in dissipating energy as water travels to the emitter opening and maintains a turbulent flow condition that facilitates movement of particulate material out of system to avoid clogging. In this study, emitters were designed using variable geometric parameters. The visualisation characteristics of computational fluid dynamics (CFD) was utilised for analysing the law of impact on flow movement by the path width (1.6, 1.3, 1.0, 0.6 mm), dentate height (1.0, 1.3, 1.6, 2.0 mm) and dentate angle (32°, 41°, 53°, 63°) and revealed the correlation relationship between the dentate structure of flow path of emitters and energy dissipation. Meanwhile, an anti‐clogging analysis was conducted. The simulation results indicated that the selected turbulent model and the numerical algorithm were suitable for the hydraulic calculation in flow paths. The rear of dentations and dentate tips were the primary regions for energy dissipation. The flow exponent with both dentate height and path width being 1.3 mm was minimum and the boundary flow velocity was maximum, i.e., there was good hydraulic performance and sound anti‐clogging capacity. Larger dentate angles had an active role in enhancing hydraulic performance but with a poor anti‐clogging property. Adjusting dentate jet effect by modifying the boundary structure of dentate flow paths could improve the inner flow pattern, enhance pressure energy dissipation, and improve boundary flow velocity, which was the key to enhancing hydraulic property and anti‐clogging property within flow path of emitters." @default.
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- W2030213360 date "2007-12-01" @default.
- W2030213360 modified "2023-09-27" @default.
- W2030213360 title "Numerical study on flow property in dentate path of drip emitters" @default.
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- W2030213360 doi "https://doi.org/10.1080/00288230709510341" @default.
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