Mathematical Model of SMD of Hydrodynamic Ultrasonic Atomizing Nozzle Based on Orthogonal Design

Wu, Guozhong; Wang, Pengfei; Tian, Chang; Liu, Ronghua; Han, Han

doi:10.21203/rs.3.rs-442908/v1

Cited by 2 publications

(1 citation statement)

References 36 publications

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“…et al (2021). Wu G.G. et al, (2021), pointed out that the latter has excellent atomisation performance, Park J. et al, (2022), showed that wind field can affect the deposition coverage of droplets, Tian Z. et al, (2022), showed that the presence of a wind field can increase the penetration of droplets between the blades, Liu C. et al, (2023), showed that a conical wind field can increase the deposition coverage of droplets, and Butler M.C.…”

Section: Introductionmentioning

confidence: 99%

Deposition Performance of Hydrodynamic Ultrasonic Atomising Nozzles With Different Spray Parameters

SONG,

GONG,

ZHANG

2023

INMATEH

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In order to study the spraying effect of hydrodynamic ultrasonic atomizing nozzle under different spraying methods, and to investigate the practical application effect of hydrodynamic ultrasonic atomizing nozzle in agriculture, the atomization angle test and droplet size test under different spraying conditions were designed. Different spraying conditions atomization angle test and droplet size test were designed, the test results data were recorded, the pattern of change of the data was observed, and the data were fit to give the data changes in line with the functional equation; different spraying conditions and different corn leaf position droplet deposition coverage test were designed and the value of the deposition coverage of each position was recorded. The results showed that: the maximum value of the variation of atomization angle under different spraying conditions was 75.49°, and the minimum value was 14.49°; the maximum value of the variation of droplet size was 18.23 μm, and the minimum value was 4.78 μm; and the droplet deposition coverage was the highest in the mid-leaf position of the upper and lower leaves of the maize when the input air pressure was 0.3 MPa, which was 86.98% and 46.97%, respectively. Fitting the atomization angle data and droplet size data, the R2 of the binomial fit was 0.85 and 0.94, respectively, and the Adjusted R2 was 0.87 and 0.88, respectively, which made the fitting function meaningful and the fitting accuracy high. The hydrodynamic ultrasonic atomizing nozzle has a great advantage in generating small droplet sizes and performs well in deposition effect, and the experimental results can provide a reference for the research of hydrodynamic nozzles in the application technology.

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Section: Introductionmentioning

confidence: 99%

Deposition Performance of Hydrodynamic Ultrasonic Atomising Nozzles With Different Spray Parameters

SONG,

GONG,

ZHANG

2023

INMATEH

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The head-on collision between droplet and stationary particle under mesoscopic scale: Effect of sample size, velocity, viscosity, and wettability

Zhu,

Jiang,

et al. 2023

Physics of Fluids

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Understanding the collision dynamics between a water mist droplet and a dust particle is crucial for uncovering the mechanisms of water mist dust suppression. However, studies involving mesoscopic-scaled samples have been rarely explored in the past. To address this gap, we performed numerical simulations and experiments to investigate collisions using realistic sizes of water mist and dust particles. Based on our findings, we proposed collision outcome regime maps to illustrate the different collision outcomes. These outcomes were categorized into four distinct regimes: rebounding, complete coalescence, ligament ripping, and skirt splashing. We have proposed both physical equations and fitting equations to describe the thresholds for rebounding, ripping, and splashing. Wettability was found to have a significant impact on the regime boundary equations, while the effects of sample size, collision velocity, and viscosity were minimal. Within the skirt splashing regime, we have proposed a power function to predict the residual liquid fraction of a collision based solely on the Reynolds number, and we have introduced a function combining the Weber number and the Ohnesorge number to predict the non-dimensional momentum transfer. By integrating the equations governing regime boundary, residual liquid fraction, and dimensionless momentum transfer, we can elucidate the dust suppression mechanism of water mist and offer optimized parameters for its effective use in mitigating dust. Interestingly, the study suggests that increasing droplet viscosity holds promise for enhancing dust suppression, rather than solely focusing on improving wettability. This introduces a new perspective to the development of additives for dust suppression.

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Mathematical Model of SMD of Hydrodynamic Ultrasonic Atomizing Nozzle Based on Orthogonal Design

Cited by 2 publications

References 36 publications

Deposition Performance of Hydrodynamic Ultrasonic Atomising Nozzles With Different Spray Parameters

Deposition Performance of Hydrodynamic Ultrasonic Atomising Nozzles With Different Spray Parameters

The head-on collision between droplet and stationary particle under mesoscopic scale: Effect of sample size, velocity, viscosity, and wettability

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