High-speed imaging database of water jet disintegration Part I: Quantitative imaging using liquid laser-induced fluorescence

Roth, Adrian; Frantz, David; Chaze, William; Corber, Andrew; Berrocal, Edouard

doi:10.1016/j.ijmultiphaseflow.2021.103641

Cited by 18 publications

(2 citation statements)

References 22 publications

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“…Liquid-laser-induced fluorescence (LIF) was used to visualize the structure of the transparent liquid bodies in a spray, such as droplets, blobs, ligaments, and liquid core [23][24][25]. The liquid was pre-enriched with the fluorescent dye fluorescein at a concentration of 2.4 × 10 4 mol•L −1 .…”

Section: High-speed Imagingmentioning

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

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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.

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Section: High-speed Imagingmentioning

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

Self Cite

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“…An early microscopy imaging study [23] studied the influence of the injection pressure on ligament formation across the entire injection process. Roth et al [24] utilized the exciplex laser-induced fluorescence LIF method to study liquid jet disintegration at different injection pressures. They found that instabilities, such as oscillations and perturbations, cause the incident liquid to break up into large ligaments.…”

Section: Introductionmentioning

confidence: 99%

Microscopic Imaging on Diesel Spray and Atomization Process

El Marnissi,

Hwang

2024

Processes

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Improving diesel engine performance requires a comprehensive understanding of fuel atomization and air–fuel mixing within the combustion chamber. Numerous studies have been conducted to reduce emissions and enhance diesel engines. However, further investigation is required on the detailed diesel spray process. In this study, we adopted extinction measurement to analyze the effects of a fuel injection pressure range of 300 to 700 bar on spray morphology. For the extinction imaging setup, we utilized a high-intensity continuous LED source along with a diffuser to ensure uniform light distribution. The high-speed extinction and image processing results indicate that increasing the injection pressure from 300 to 700 bar effectively produced a smaller particulate size (15% reduction) and a better air–fuel mixing process. Especially at the end of injection, our results show smaller liquid ligaments (50% reduction) and droplets around the injector tip with higher injection pressure cases.

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Stress Distribution and Dynamic Evolution of Coal Surface Under a Single Droplet of Discrete Water Jet

Yuan,

Zhao,

Jiang

et al. 2024

Rock Mech Rock Eng

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High-speed imaging database of water jet disintegration Part I: Quantitative imaging using liquid laser-induced fluorescence

Cited by 18 publications

References 22 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

Microscopic Imaging on Diesel Spray and Atomization Process

Stress Distribution and Dynamic Evolution of Coal Surface Under a Single Droplet of Discrete Water Jet

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