Characterization of venturi injector using dimensional analysis

Sobenko, Luiz Ricardo; Frizzone, José Antônio; Camargo, Antônio Pires de; Saretta, Ezequiel; Rocha, Hermes Soares da

doi:10.1590/1807-1929/agriambi.v23n7p484-491

Cited by 8 publications

(4 citation statements)

References 23 publications

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“…As illustrated in Exhibit 3, to study the effect of venturi system configuration on aeration performance (η), five dominant influencings parameters are investigated within their various experimental values (Bagatur et al., 2018; Li et al., 2020; Sobenko et al., 2019). Meanwhile, the air velocity and its corresponding discharge are also measured in each run.…”

Section: Methodsmentioning

confidence: 99%

Configuration influence in relation to fluid flow of venturi system

Hamed

2022

Environmental Quality Mgmt

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Due to its simplicity and accurately measuring the flow rate, the venturi system is a special kind of pipe that is widely used in various applied fluid mixtures. One of the venturi system's important applications is ejectors devices that accurately facilitate adding air to water to sustain oxygen demand target levels in many waterworks engineering systems. This study aims to improve venturi system measurement accuracy through experimental investigation and analytical analysis for the venturi system conditional configuration parameters effect on target aeration operational efficiency. In the experiment work, different runs are implemented to characterize the performance of such aerators by describing the impact of venturi characteristics and configurations, including water flow rate, air inlets orifices diameters, inlet velocities, throat lengths, inlet angles, outlets angles, and outlet diameters on aeration efficiency. Results show that the venturi air vent diameter is an important governing parameter for determining aeration performance value. Additionally, an indicated increase in aeration performance with an increasing throat length to its diameter ratio. Meanwhile, the results revealed a varying noted effect of the venturi system characteristics and configurations on aeration performance. Moreover, the equations that relate venturi system configuration and Reynolds numbers with the aeration operational performance are developed to facilitate the target accurate aeration efficiency estimation.

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Section: Methodsmentioning

confidence: 99%

Configuration influence in relation to fluid flow of venturi system

Hamed

2022

Environmental Quality Mgmt

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“…O'Hern et al [16] established a method for the design of these injectors, while Sobenko et al [17] proposed a model for predicting the performance of a Venturi injector, in addition to analyzing the flow pressure ratios that generated the highest level of instability in the Venturi injector.…”

Section: Introductionmentioning

confidence: 99%

Venturi Injector Optimization for Precise Powder Transport for Directed Energy Deposition Manufacturing Using the Discrete Element Method and Genetic Algorithms

García-Montagut,

Paz,

Monzón

et al. 2024

Materials

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Additive manufacturing technologies such as directed energy deposition use powder as their raw material, and it must be deposited in a precise and controlled manner. Venturi injectors could be a solution for the highly precise transport of particulate material. They have been studied from different perspectives, but they are always under high-pressure conditions and mostly fed by gravity. In the present study, an optimization of the different dimensional parameters needed for the manufacturing of a Venturi injector in relation to a particle has been carried out to maximize the amount of powder capable of being sucked and transported for a specific flow in a low-pressure system with high precision in transport. For this optimization, simulations of Venturi usage were performed using the discrete element method, generating different variations proposed by a genetic algorithm based on a preliminary design of experiments. Statistical analysis was also performed to determine the most influential design variables on the objective, with these being the suction diameter (D3), the throat diameter (d2), and the nozzle diameter (d1). The optimal dimensional relationships were as follows: a D3 34 times the particle diameter, a d2 26.5 times the particle diameter, a d1 40% the d2, a contraction angle alpha of 18.73°, and an expansion angle beta of 8.28°. With these proportions, an 85% improvement in powder suction compared to the initial attempts was achieved, with a maximum 2% loss of load.

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“…Zhang et al (2017) noted that the injection rate of the existing symmetrical Venturi injector was approximately 0.311 m 3 h À1 when the injection pipe diameter was 7.5 mm, which made it difficult to meet the needs of field irrigation. Furthermore, there was often more than 30% energy loss in the process of fertilizer injection with a Venturi injector (Sobenko et al, 2019). To reduce the energy loss and increase the fertilizer injection capacity of Venturi injectors, Fan et al (2017) noted that parallel Venturi injectors were beneficial for reducing the energy loss of irrigation systems.…”

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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Characterization of venturi injector using dimensional analysis

Cited by 8 publications

References 23 publications

Configuration influence in relation to fluid flow of venturi system

Configuration influence in relation to fluid flow of venturi system

Venturi Injector Optimization for Precise Powder Transport for Directed Energy Deposition Manufacturing Using the Discrete Element Method and Genetic Algorithms

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

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