Principles and droplet size distributions of various spraying methods: a review

Park, Seongmin; Park, Keunhwan

doi:10.1007/s12206-022-0724-3

Cited by 8 publications

(4 citation statements)

References 60 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Small droplet size, high particle number, and ample surface coverage are key features of a well-distributed cell spray [33,34]. However, studies have shown that aerosol sprays operated at high air pressures negatively impact droplet size and distribution [35,36].…”

Section: Discussionmentioning

confidence: 99%

High-Speed Fluorescence Imaging Corroborates Biological Data on the Influence of Different Nozzle Types on Cell Spray Viability and Formation

Heuer,

Stiti,

Eras

et al. 2024

JFB

View full text Add to dashboard Cite

Treating severe dermal disruptions often presents significant challenges. Recent advancements have explored biological cell sprays as a promising treatment, but their success hinges on efficient cell delivery and complete wound coverage. This requires a good spray distribution with a small droplet size, high particle number, and ample surface coverage. The type of nozzle used with the spray device can impact these parameters. To evaluate the influence of different nozzles on spray characteristics, we compared air-assisted and unassisted nozzles. The unassisted nozzle displayed small particle size, high particle number, good overall coverage, high cell viability, preserved cell metabolic activity, and low cytotoxicity. Air-assisted nozzles did not perform well regarding cell viability and metabolic activity. Flow visualization analysis comparing two different unassisted nozzles using high-speed imaging (100 kHz frame rate) revealed a tulip-shaped spray pattern, indicating optimal spray distribution. High-speed imaging showed differences between the unassisted nozzles. One unassisted nozzle displayed a bi-modal distribution of the droplet diameter while the other unassisted nozzle displayed a mono-modal distribution. These findings demonstrate the critical role of nozzle selection in successful cell delivery. A high-quality, certified nozzle manufactured for human application omits the need for an air-assisted nozzle and provides a simple system to use with similar or better performance characteristics than those of an air-assisted system.

show abstract

Section: Discussionmentioning

confidence: 99%

High-Speed Fluorescence Imaging Corroborates Biological Data on the Influence of Different Nozzle Types on Cell Spray Viability and Formation

Heuer,

Stiti,

Eras

et al. 2024

JFB

View full text Add to dashboard Cite

show abstract

“…Surface tension is another determinant factor that influences the atomization as it signifies the energy amount needed to increase bubbles [152][153][154][155]. While surface tension affects the fuel surface area, volatility influences the spray evolution and mixture formation [114,[156][157][158][159].…”

Section: Factors Affecting Spray Evolutionmentioning

confidence: 99%

Diesel Spray: Development of Spray in Diesel Engine

Djamari

Idris²,

Paristiawan³

et al. 2022

Sustainability

View full text Add to dashboard Cite

Research and development in the internal combustion engine (ICE) has been growing progressively. Issues such as air pollution, fuel cost, and market competitiveness have driven the automotive industry to develop and manufacture automobiles that meet new regulation and customers’ needs. The diesel engine has some advantages over the gasoline or spark ignition engine, including higher engine efficiency, greater power output, as well as reliability. Since the early stage of the diesel engine’s development phase, the quest to obtain better atomization, proper fuel supply, and accurate timing control, have triggered numerous innovations. In the last two decades, owing to the development of optical technology, the visualization of spray atomization has been made possible using visual diagnostics techniques. This advancement has greatly improved research in spray evolution. Yet, a more comprehensive understanding related to these aspects has not yet been agreed upon. Diesel spray, in particular, is considered a complicated phenomenon to observe because of its high-speed, high pressure, as well as its high temperature working condition. Nevertheless, several mechanisms have been successfully explained using fundamental studies, providing several suggestions in the area, such as liquid atomization and two-phase spray flow. There are still many aspects that have not yet been agreed upon. This paper comprehensively reviews the current status of theoretical diesel spray and modelling, including some important numerical and experimental aspects.

show abstract

“…Compared with other methods, ultrasonic atomization has the unique advantages of high atomization uniformity, high material utilization rate, and high economic bene ts. It has been widely welcomed and applied by the industry, which has greatly stimulated scholars' research enthusiasm [12] [13].…”

Section: Introductionmentioning

confidence: 99%

Investigation of electrostatic-assisted ultrasonic atomization and spraying

Yang,

Yuan,

Zhang

et al. 2024

Int J Adv Manuf Technol

View full text Add to dashboard Cite

Ultrasonic atomization technology has been widely used in industry in recent years due to its higher atomization e ciency. This paper proposes a method of electrostatic-assisted ultrasonic atomization spraying and designs a special ultrasonic power supply that can directly introduce high-voltage static electricity onto the surface of the ultrasonic atomization so that the liquid can contact the charge and enhance the charging effect. This paper conducts numerical simulation analysis on the atomization process and statistically analyzes the numerical simulation atomization particle size through image processing. In addition, this paper designs experiments from two aspects of atomization particle size and lm-forming effect. The results show that the experimental results are consistent with the numerical simulation results, verifying the accuracy of the numerical simulation results. It shows that in the process of sub-droplet formation, the introduction of static electricity will increase the number of capillary waves, promote two mechanisms of the capillary pinch-off mechanism and the Rayleigh-Plain instability, reduce atomization particle size, and increase atomization e ciency. Compared with the traditional air ow beam method, the lm-forming surface quality of the electric eld beam method is higher and the surface roughness is lower. It solves the problem that air ow affects lm-forming quality in traditional ultrasonic spraying with the air ow beam method. It provides a theoretical basis and scienti c guidance for the application of electrostatic-assisted ultrasonic atomization technology in the atomization and lm preparation industry.

show abstract

Principles and droplet size distributions of various spraying methods: a review

Cited by 8 publications

References 60 publications

High-Speed Fluorescence Imaging Corroborates Biological Data on the Influence of Different Nozzle Types on Cell Spray Viability and Formation

High-Speed Fluorescence Imaging Corroborates Biological Data on the Influence of Different Nozzle Types on Cell Spray Viability and Formation

Diesel Spray: Development of Spray in Diesel Engine

Investigation of electrostatic-assisted ultrasonic atomization and spraying

Contact Info

Product

Resources

About