Effect of structural optimization on performance of Venturi injector

Yan, Haijun; Chen, Y; Chu, X Y; Xu, Yuncheng; Wang, Z P

doi:10.1088/1755-1315/15/7/072014

Cited by 8 publications

(9 citation statements)

References 2 publications

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“…A second strategy for assisting in the removal of the foam (also shown in Fig. 2 ) was the placement of a tube with bleeding of the affluent to assist in drawing the oily foam [ 20 ]. To avoid the formation of low-pressure zones and the consequent disturbance of the flow through the flotation chamber, the tubing had an additional piece serving as a vacuum breaker [ 21 ].…”

Section: Methodsmentioning

confidence: 99%

Oily water treatment in a multistage tower operated under a novel induced pre-saturation process in the presence of a biosurfactant as collector

Santos

Silva

Brasileiro

et al. 2021

Biotechnology Reports

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Section: Methodsmentioning

confidence: 99%

Oily water treatment in a multistage tower operated under a novel induced pre-saturation process in the presence of a biosurfactant as collector

Santos

Silva

Brasileiro

et al. 2021

Biotechnology Reports

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“…The pressure loss caused by using Venturi injectors for fertilizer decreases the quality of fertilization and irrigation uniformity (Yan, Chen, Chu, Xu, & Wang, 2012), for which the structural parameters should be optimized for better performance and to avoid losses. Thus, the throat diameter influences the internal flow through the injector throat, the divergent angle influences the performance and efficiency of injection in the Venturi mechanism, and the ratio of convergent to divergent angles have greater influence on performance injection than the throat diameter.…”

Section: Introductionmentioning

confidence: 99%

“…According to Guash, Piera, and Casanovas (2009), it is now possible to generate outputs for the creation of statistical models to evaluate processes with simulated results. Therefore, to reduce the effect of the pressure difference between inlet and outlet required by Venturi-type injectors, and to improve injection efficiency, the best option for calculating and determining the ideal structural parameters is simulation using computer software (Yan, Chen, Chu, Xu, & Wang, 2013a). Analyses of the results from simulation processes allows for selection of injection rate into the flow device.…”

Section: Introductionmentioning

confidence: 99%

Design of Venturi-Type Fertilizer Injectors to Low-Pressure Irrigation Systems

García-Saldaña¹,

Castañeda-Chávez²,

Pérez-Vázquez³

et al. 2023

JAS

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Twenty prototypes of Venturi-type fertilizer injectors for low-pressure agricultural irrigation systems were designed based on functional hydraulic pressure head and variation of their structural designs. These prototypes were modelled in three dimensions (3D) and evaluated using simulation through Computational Fluid Dynamics software (CFD). The main structural design characteristics come from a real necessity to complement an low pressure multigate irrigation system project named in Spanish “El Manzano” (The Apple tree) and bring it the fertigation possibility. The aim of this research was to select the best prototype, in order to identify the convergent and divergent angles, throat diameter and hydraulic pressure head to efficiently produce a Venturi-type injector for use in gated-irrigation pipe irrigation systems for use in a future in “El Manzano” project. As a result of the simulations, the physical characteristics of the injector were defined. The inlet and outlet diameters should be 152.4 mm, the throat diameter 76.2 mm and the suction diameter of 50.8 mm. The convergent and divergent angles showing most improved performances were 7.5 and 10°, respectively. This methodology can be used to construct Venturi-type fertilizer injectors for low-pressure gated-pipe agricultural irrigation systems, which, on one side, can reduce significantly the fertilizer application costs and, on the other side, the fertilizer management efficiency can be also improve considerably to save water resources. There is relatively very little experience in using this type of fertilizer injectors in low-pressure irrigation systems.

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“…There is a general agreement that the structural parameters of the Venturi injector have a significant impact on its fertilizer injection performance (Ozkan et al, 2006; Yan et al, 2013). The structural optimization design of a Venture injector is one of the main ways to improve its hydraulic and fertilizer injection performance.…”

Section: Introductionmentioning

confidence: 99%

Structure optimization and fertilizer injection performance analysis of a non‐axisymmetric Venturi injector

Hu,

Guan,

et al. 2023

Irrigation and Drainage

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To improve the fertilizer injection performance of a non‐axisymmetric Venturi injector (NAVI), the effects of the contraction angle, diffusion angle, throat diameter and tilt angle of the injection pipe on the fertilizer injection performance of NAVI were examined. Based on the test, the original NAVI was optimized, and the fertilizer injection performance of NAVI before (F1) and after (F2) optimization was compared. Then, a non‐axisymmetric Venturi injector with arc diffusion (F3) was proposed. The results showed that when the water inlet diameter of the non‐axisymmetric Venturi injector was 25 mm, the optimal structural parameters were as follows: the contraction angle was 40°, the diffusion angle 6°, the throat diameter 7 mm and the tilt angle of the injection pipe was 120°. Compared with F1, the injection rate and fertilizer injection efficiency of F2 increased by 21–66 and 27–79%, respectively. Changing the diffusion section of NAVI into an arc structure was conducive to reducing the vortex area size by 11% and improving the injection rate by 20–62%. The results can provide an important reference for the structural design of Venturi injectors.

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Effect of structural optimization on performance of Venturi injector

Cited by 8 publications

References 2 publications

Oily water treatment in a multistage tower operated under a novel induced pre-saturation process in the presence of a biosurfactant as collector

Oily water treatment in a multistage tower operated under a novel induced pre-saturation process in the presence of a biosurfactant as collector

Design of Venturi-Type Fertilizer Injectors to Low-Pressure Irrigation Systems

Structure optimization and fertilizer injection performance analysis of a non‐axisymmetric Venturi injector

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