Experimental Studies on Fuel Spray Characteristics of Pressure-Swirl Atomizer and Air-Blast Atomizer

Wang, Kaixing; Fan, Xiongjie; Liu, Fuqiang; Liu, Cunxi; Lu, Haitao; Xu, Gang

doi:10.1007/s11630-021-1320-z

Cited by 14 publications

(3 citation statements)

References 20 publications

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“…Air-assisted sprayers guarantee that most of the fine pesticide droplets could deposited on the target surface, which were used to eradicate pests and prevent crop damage ( Li et al., 2020a ; Zhang et al., 2022 ). The liquid atomization process in the air-assisted nozzle depends on the collision and friction force resulting from the air–liquid velocity difference ( Li et al., 2021 ; Wang et al., 2021 ). Nozzle atomization is a complex, multiphase, and transient process; it consumes a significant amount of atomization energy to break the liquid into liquid film or filament at the nozzle outlet.…”

Section: Introductionmentioning

confidence: 99%

Design and experimental research of air-assisted nozzle for pesticide application in orchard

Ou,

Zhang,

et al. 2024

Front. Plant Sci.

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This article reports the design and experiment of a novel air-assisted nozzle for pesticide application in orchard. A novel air-assisted nozzle was designed based on the transverse jet atomization pattern. This article conducted the performance and deposition experiments and established the mathematical model of volume median diameter (D50) and liquid flow rate with the nozzle design parameters. The D50 of this air-assisted nozzle ranged from 52.45 μm to 113.67 μm, and the liquid flow rate ranged from 142.6 ml/min to 1,607.8 ml/min within the designed conditions. These performances meet the low-volume and ultra-low-volume pesticide application in orchard. The droplet deposition experiment results demonstrated that the droplet coverage distribution in different layers and columns is relatively uniform, and the predicted value of spray penetration (SP) numbers SPiA, SPiB, and SPiC (i = 1, 2, and 3) are approximately 70%, 60%, and 70%, respectively. The droplet deposits on the foliage of the canopy (inside and outside) uniformly bring benefit for plant protection and pesticide saving. Compared with the traditional air-assisted nozzle that adopts a coaxial flow atomization pattern, the atomization efficiency of this air-assisted nozzle is higher. Moreover, the nozzle air pressure and liquid flow rate are considerably lower and greater than the traditional air-assisted nozzle, and these results proved that this air-assisted nozzle has great potential in orchard pesticide application. The relationship between the D50 and nozzle liquid pressure of this air-assisted nozzle differs from that of traditional air-assisted nozzles due to the atomization pattern and process. While this article provides an explanation for this relationship, further study about the atomization process and mechanism is needed so as to improve the performance.

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Section: Introductionmentioning

confidence: 99%

Design and experimental research of air-assisted nozzle for pesticide application in orchard

Ou,

Zhang,

et al. 2024

Front. Plant Sci.

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“…Many scholars have carried out in-depth research on the atomization characteristics of nozzles by analyzing the size and distribution of atomized particles from the viewpoints of both numerical and experimental evaluation. Factors affecting the atomization effect such as the gas, liquid flow, liquid temperature, and viscosity have been extensively experimentally evaluated in the literature [ 3 , 4 , 5 , 6 , 7 ]. For instance, Wang et al [ 6 ] studied the pressure swirl and air flow of an atomizer with experiments in which the droplet size and distribution under different fuel pressure were measured using a laser particle-size analyzer.…”

Section: Introductionmentioning

confidence: 99%

“…Factors affecting the atomization effect such as the gas, liquid flow, liquid temperature, and viscosity have been extensively experimentally evaluated in the literature [ 3 , 4 , 5 , 6 , 7 ]. For instance, Wang et al [ 6 ] studied the pressure swirl and air flow of an atomizer with experiments in which the droplet size and distribution under different fuel pressure were measured using a laser particle-size analyzer. The results showed that the average particle diameter decreased as the pressure drop increased.…”

Section: Introductionmentioning

confidence: 99%

Measuring Liquid Droplet Size in Two-Phase Nozzle Flow Employing Numerical and Experimental Analyses

et al. 2022

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The flavoring process ensures the quality of cigarettes by endowing them with special tastes. In this process, the flavoring liquid is atomized into particles by a nozzle and mixed with the tobacco in a rotating drum. The particle size of the flavoring liquid has great influence on the atomization effect; however, limited research has addressed the quantitation of the liquid particle size in two-phase nozzle flow. To bridge this research gap, the authors of this study employed numerical and experimental techniques to explore the quantitative analysis of particle size. First, a simulation model for the flavoring nozzle was established to investigate the atomization effect under different ejection pressures. Then, an experimental test is carried out to compare the test results with the simulation results. Lastly, the influencing factors of liquid particle size in two-phase nozzle flow were analyzed to quantify particle size. The analysis results demonstrated that there was a cubic correction relationship between the simulation and experiment particle size. The findings of this study may provide a reliable reference when evaluating the atomization effect of flavoring nozzles.

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Analysis of Spray Evaporation in a Model Evaporating Chamber: Effect of Air Swirl

Abedinejad

2023

J. Therm. Sci.

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Experimental Studies on Fuel Spray Characteristics of Pressure-Swirl Atomizer and Air-Blast Atomizer

Cited by 14 publications

References 20 publications

Design and experimental research of air-assisted nozzle for pesticide application in orchard

Design and experimental research of air-assisted nozzle for pesticide application in orchard

Measuring Liquid Droplet Size in Two-Phase Nozzle Flow Employing Numerical and Experimental Analyses

Analysis of Spray Evaporation in a Model Evaporating Chamber: Effect of Air Swirl

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